[vel0city]

> there is still some acceleration that occurs as the engine drops from 6-7k RPM down to idle.

Not in any vehicle I've operated. The moment I pull off the throttle completely, it stops flowing any more than idle speed fuel mixture into the motor. Without that combustion power, it starts to act more like an air compressor almost immediately, causing negative force output. It is taking energy from the crank to try and compress a mixture which, when combusted (if even combustable, most likely not), results in less expansive force than the force it took to compress. This is even more pronounced at high RPMs as that action happens more times every second.

If I let go of the throttle on my motorcycle at 9krpms and like 70mph or whatever it feels like I pressed hard on my rear brake instantly, for all intents and purposes. You'll feel your weight get thrown forwards immediately.

If your car continues to accelerate after you've taken your foot off the gas something is wrong with your car.

[SpelingBeeChamp]

Appropriate username.