The decade is the 1960s. You’re a GM development engineer and you need to evaluate a vehicle’s performance in a strong crosswind. What do you do? Drive past a giant fan multiple times? Nope. Naturally, as any normal person would do, you strap a rocket to the side of the car, and record the results.
As seen above, the miniature rocket mechanism strapped to the side of a Chevy Corvair pushed out pressure anywhere from 50 to 200 pounds, which could be controlled. The rocket could also be mounted anywhere on the car, while instruments in the back seat recorded the happenings.
Would be nice to see some footage of these bad boys in action.