Sure, it is played for humor, but as a gal who has PASSED A LAMBORGHINI WHILE BIKING ON HER ROAD BIKE, I can tell you there is truth in this: it's not about the speed of the machine, it is about living in a city with lots of other people on the move. A Lamborhini (or a smoking hot Ducati) loses its advantage when the average street speed drops below 20 mph.
(Note: the original video is no longer available; this is repost with different music than I remember.)
