the majority of cars didn't have abs (now it is mandatory) airbags (now it is mandatory) crash testing (you get the idea) auto-choke
already you can't do much to damage the engine except for downshifting from 4th to 2nd going 90 or something funky like that
all cars now have a rev limiter. that alone is very limiting to how much you can mistreat the engine.
go bouncing off the limiter in 1st during july from stone cold (don't know how you would do that in mid july... underground garage i guess)
if you manage to do that for a while (that is, if you are such a cold hearted bastard or astronomicaly ignorant) you will still be left with a running engine.
if you do that with a wankel, think it will start the next time? the next next time?
anyway it's getting late, i hope you get the idea