See this I agree and disagree with. A cars ET or MPH don't determine if its a street car to me. I could drive mine daily if I wanted with no hiccups. I use my own car as a reference because I can be factual with it. full factory interior, front and rear seats, all stereo equipment and all electronics still in place and functional can run sub 8.6's @163 mph. I ran it in a class with that configuration at the end of last season. pump E85. factory style engine, trans and 3.09 rear. all working ABS, air bags etc... these new late model cars are insanely quick.
now to the agreeing part. to run in a sanctioned event, you must have the required safety equipment 100%! at the point of cage, and parachute you are at the "race car" level.
to also elaborate further between race and street car. working AC and heat, windshield wipers. oem style engine, trans and rear. factory PCM. the ability to run pump gas/ethanol.