I've heard one horror story from a car donor, because the group to which he donated never bothered to actually do the title transfer paperwork when they found a new home for the car, so he was getting bombarded with tickets and threatening letters accusing him of stuff he didn't do because it was done in that car which used to be his.But really, that's just a matter of vetting the company you're donating to, and hounding them to make sure all the paperwork is done properly. Like I said, I've only heard one horror story. =)