[jquery]

It sounds like Optimus Prime farting.

I think you're projecting your own emotional attachment to speed onto a very unpleasant sound.

[orangethirty]

Have you ever been to a Formula 1 race? Or even any auto race?

[jpatokal]

I lived a stone's throw from the Singapore GP for several years. The racket was godawful and basically made the neighborhood unlivable for the three days the circus lasted.