I actually stopped my credit card from getting charged by Zip Car. Long story short. I rented a car May 4th, 2011 and there was a warning light that said, 'Tire needs air now!'. I went to put in air and the air nozzle cracked off. It was already partially cracked. The tire needed to be replaced. I waited with the car for over two hours for roadside assistance. Now, they say I owe $726.55. I won't pay this no matter what agreement I signed. I could have left that car, but I stayed with did the due diligence and stayed with their damaged vehicle and then got charged. Stay away from this company