David Letterman, Carl Fisher, and Dropping Things Off Indy Buildings

Let's look at the facts:
Carl Fisher is from Indianapolis, as is David Letterman.
Carl Fisher developed the Lincoln Highway, the first coast-to-coast highway, while an Indianapolis freeway named after a U.S. senator was almost named "The Dave," in honor of Letterman.
Grocery clerks: both of them.
The most interesting similiarity, perhaps: Carl Fisher dropped thing off buildings (in particular cars, but also bicycles) and so does David Letterman.
To wit, an excerpt from Cross Country, by Robert Sullivan (also author of "Rats") and, following that, a Late Show building drop segment:





Is the car-related building toss an Indianapolis phenomenon? All we can really do at this point is ask the question.