Dennis Access News Today

Crash this person, this driver has gone from brakes off to brakes on. >> reporter: chrysler and gm and ford give people like dennis access to the information through a crash data reader anyone can buy. its for any car combatible with this system? >> thats correct. >> reporter: and toyota is not catable? >> thats correct. >> reporter: they say it is only for research and development and not reliable for accident reconstruction. >> i think it is. if it provides any kind of data to me about whats g...