Hot Throttle is a free web game by Cactus and Doomlaser over on the always-wonderful Adult Swim game section. It's required playing, as far as I'm concerned.
It's sort of like a microgame from the WarioWare series, but more in-depth and risque. Half-naked man-cars are risque, right? Or maybe they prefer to be called car-men. In either case, Hot Throttle is clearly open for interpretation.
After playing this, you'll have to answer "yes" when your significant other asks if your day was interesting.