[thecount122195]

I would say sloop maybe? Traditionally that was the next size down from corvettes but the corvette is the smallest warship. Maybe PT boat? GM tried to evoke the corvette name with the chevette but that thing was about as far from a sports car as you could get.

[PhasmaFelis]

I thought of PT boats too! It's not a great name for a car, but it's short for "patrol torpedo boat," so maybe Patrol or Torpedo? I dunno, Torpedo might sound too explodey to be trusted.

[csours]

Hmm also PT Cruiser... not a great connotation at this point.