I think it was Blitz on the VIC-20. It was definitely a Vic game, could have been Choplifter, Bullitt, or Trap which is the one that sticks out most in the mind. But I think that's just because of how frantic I found it.
I want to max out my cool. It's not like I I've ever been able to do it in real life!
It would also kickstart my new build for something capable of playing this at high quality.