Sobriety tests and corpses in cars (spoilers).

At the beginning of the film a man in a car is asked by a suspicious policeman to perform a rather demanding sobriety test, upon the completion of which the policeman realises there is a dead body in the car. Did this remind anyone else of the scene in the Steve Martin comedy The Man with Two Brains, where much the same thing happens?

I admit that the sobriety test in the latter was more obviously a farce, but I initially thought that being asked to recite the alphabet backwards was intended as humour – though it appears (as has been raised elsewhere on this forum) it can actually happen in the US.

http://www.youtube.com/watch?v=-0MXU3J6Qbs

“Damn, your drunk tests are hard.”