Potholes abound on the road to car-to-car communication

Oh yes, please: let’s build a mass communications network dependent on a (largely) creaky Certificate system, deploy the devices to the attackers (i.e. car owners), and just trust that no one’s gonna hack a mass, nation-wide, Vehicle-to-Vehicle communications network.

Also: taking bets on it being an escrowed certificate system. For public safety and all that good stuff.