Lewis Lehe
@lewislehe.bsky.social
Assoc. Prof at University of Illinois Urbana-Champaign. Traffic, transit and economics. https://lehelab.com/
You can't do this to the English language: “In many ways, the YIMBY movement is more dangerous to renters than the landlord groups in some ways”
(Bombshell has entered the villa voice): this finite time *glow*up just became a finite time *blow*up
good post on ”undervalued“ yuan. China is cyberbullied and scapegoated. There is a cabal who do nothing except demand china hurt itself for no reason. they have no math abilities but go on famous podcasts and get quoted in newspapers as experts. Its weird! scottsumner.substack.com/p/what-is-an...
What is an undervalued currency?
Focus on fundamentals, not gimmicks
scottsumner.substack.com
Pretty cool timex.com/products/tim...
Timex 1990 Moon Phase and Calendar Dial Reissue 37mm Leather Strap Wat
With a dial that was comparatively sophisticated for its time, this 1990 reissue unites the day, date, and lunar cycle in a design that feels both technical and poetic. The 37mm polished gold-tone sta...
timex.com
europe’s position is different from america’s in that they export a lot of cars. so even if they curtail chinese ev imports, they take a hit. they also import a lot of oil, so chinese evs exert two opposite effects on their trade. www.cnbc.com/amp/2026/09/...
Volkswagen plans 50,000 job cuts as analysts see ‘halo effect’ for German auto industry
Volkswagen shares jumped on Friday after it announced plans to slash a further 50,000 jobs as part of its transformation plan.
cnbc.com
"the extraordinary AI capital-investment cycle has not, thus far, produced a detectable residential electricity-price externality." will see if this holds. maybe prices rose at the same time as data centers, for other reasons. this is what statistics is for. papers.ssrn.com/sol3/papers....
Do Data Centers Raise your Electricity Bill? Evidence from U.S. States
Data-center investment has become one of the largest capital-expenditure cycles in financial markets, with U.S. hyperscalers expected to deploy roughly $700 bil
papers.ssrn.com
we have the normal consequences of loose money. inflation higher than target, good job growth, high investment, rising long term interest rates. theres no special ai or tariff thing. M2 growth has accelerated linearly since july 2023. embrace boring explanations www.nytimes.com/live/2026/09...
Jobs Report Live Updates: U.S. Hiring Jumps, an Encouraging Sign for the Economy
Employers added 162,000 jobs in August, and the unemployment rate held steady at 4.1 percent. But wage growth is not keeping up with rising inflation.
nytimes.com
“The effect of EVs on oil consumption was almost twice as large as would be expected based on the increase in the number of EVs on the road alone, as the usage of existing EVs surged.” Intensive vs extensive margin in the wild www.carbonbrief.org/analysis-chi...
Analysis: China’s CO2 emissions fall in Q2 2026 due to plummeting oil use - Carbon Brief
China’s carbon dioxide (CO2) emissions fell by 1% in the second quarter of 2026, as oil consumption plummeted amid the strait of Hormuz crisis.
carbonbrief.org
agreed. there are many papers about imaginary systems, like tradeable mobility credits, drone congestion, perimeter control, and so on. Few scholars seem to care about this real thing italy has had for a long time. Maybe *because* it already exists
Many people are saying. Italy's ZTLs are one of the most underrated, least researched (and misunderstood) traffic management tools in the current urbanist debate.
With jet drones, theres no point in pipelines to bypass hormuz. everything near iran can be destroyed easily. I think Gulf equilibrium is just off the books tribute to iran. i doubt gulf states can deter w/ their own drones, bc iran doesnt have much to lose. www.nytimes.com/2026/09/03/w...
The New Jet-Powered Drones That Are Breeding Anxiety in Ukraine
These Russian drones are more destructive, faster and harder to shoot down than the propeller-driven models that Moscow has used throughout the war.
nytimes.com
tenure lets me voice unpopular opinions like pulling for UAB against my employer. i will never lose hope in the blazer boys
A Ukrainian Air Force MiG-29 fighter pilot intercepts a Russian S-8000 Banderol mini cruise missile at extremely close range. #Ukraine
since fleet avs have fixed costs ( HD maps, depots), they are similar to “natural monopolies” like streetcars and power. i expect to see subsidies for semi-rural areas to “get connected.” similar to the Dial a ride and “flex route” transit we have now
Robotaxis create serious problems in big, dense cities, but they’d be a godsend in small towns and rural areas—huge swaths of America that the AV industry is ignoring. My latest, in Bloomberg (gift link) 🧵
Big spider built this web in my door at knee height. biologists will disagree, and they are right overall, but i know this one just wants to bite me and to eat me
reminds me how the white house covid 19 origins page makes it seem like trump signed off on the creation of covid 19
I like that this design appears to show the birth date of liberty as 1776, and its death as 2026
The city of Champaign just eliminated minimum parking requirements citywide!!!
Last year, china took big steps to make chinese people buy fewer evs. now they are trying to get foreigners to buy fewer chinese evs. amp.scmp.com/business/chi...
Beijing issues guidelines for Chinese carmakers to curb discount wars overseas
New rules signal push for sustainable expansion as Chinese EV makers pursue long-term gains and influence in global markets.
amp.scmp.com
many americans make their living off what you might call “ arrangements.” the result of combinations of safety rules, licenses etc. I expect that these will proliferate with ai. creating more arrangements will be a good way to get votes as professions compete with computers.
One way the elevator union restricts entry is to make it impossible to join without friends or family in the union to feed you inside info. They claim apprenticeship applications are accepted for a few weeks every two years, but in reality the window is a few minutes www.reddit.com/r/Elevators/...
jd vance looks more and more like a druski version of jd vance
“Davis is the only person still alive among the four men prosecutors say were in the Cadillac. The man who prosecutors say originally gave the gun to Davis is also dead.” abc7.com/post/tupac-s...
Jury convicts Duane Davis of first-degree murder for 1996 killing of Tupac Shakur
A jury found Duane "Keffe D" Davis guilty of orchestrating the 1996 killing of Tupac, marking the first conviction in a case that has gripped fans for decades.
abc7.com
uiuc economist david albouy‘s letter in the economist about daron acemoglu’s work.
blowing the dog's mind by leaving through the back door and returning through the front door
great plot from minneapolis fed. Post is about tariffs, but what strikes me is the services inflation is about 4% post covid and 2% pre. hard to see how this would go down without rate hikes.
{gtfsrealtime}: a Package for Working with GTFS-Realtime Transit Data in R
{gtfsrealtime}: a Package for Working with GTFS-Realtime Transit Data in R
{gtfsrealtime} is an R package for working with GTFS-realtime feeds.
dlvr.it
MS student Ben O'Brien from my research group has published an R package: transittraj. It takes TIDES data (AVL data standard) and GTFS and interpolates vehicle trajectories, including both location and speed trajectories. cran.r-project.org/web/packages...
transittraj: Reconstruct and Visualize Transit Vehicle Trajectories
Today's public transit vehicles produce a large amount of automatic vehicle location (AVL) data. This data is very useful for planning and performance studies, but can be noisy, error-prone, and spars...
cran.r-project.org
this is going to be a "the real mammoth was the friends we made along the way." it is amazing to think there were mammoths in 2000 BC. time.com/article/2026...
The Woolly Mammoth’s Comeback Is Taking Longer Than Expected
Colossal Biosciences now estimates that it will de-extinct a woolly mammoth sometime in the 2030s.
time.com