Uhhh... if you're surrounding by multiple layers of cyclists and try to drive your way out hitting a few cyclists, the cyclists are going to swarm your car and kill you.
To be fair, I think this only happened a few times and it was caused by a small number of bad players, while the majority of Critical Mass participants were ethically (if somewhat inconveniently) demonstrating their collective power.
What happens when you cross an autonomous car and stand-your-ground gun laws? Through in some citizens united where a corporation is a person, and you might have cars that fight back...
The future must be interesting, I feel bad we only get to see the 20's, like whoever lived in the 20's in the last century and died before the 70's saw nothing!
