We have all heard the idea that people compensate for being forced to wear a seatbelt by driving faster. This effect is not great, but may be significant at the margin for people more likely to drive fast in the first place.
Now we get to see a similar experiment on the Indiana State Fair’s midway, where trans fats are now banned. Read the story if you have a strong stomach for New York Times snarkiness and descriptions of 2000-calorie snack plates.