Original sentence: MasterCard and Visa in the United States say they cover "Physical damage and/or theft", but an introductory paragraph for some MasterCards and all Visa cards limits this to "collision or theft," so vandalism and hail are excluded.Other issues important to some renters are that Discover and American Express cover only the cardholder, not helpful when people share a car rental.Some American Express and MasterCards are not useful on dirt or gravel roads, since they exclude "damage sustained on any surface, other than a bound surface such as concrete or tarmac".The main difference among the cards is that Discover covers nothing else; Visa and some MasterCards and American Express cards also cover theft, while other MasterCards and American Express cards include theft, vandalism, hitting a deer or chipping a window
Edited sentence: Damage waiver is a very helpful product that relieves the renter of any financial responsibilities for the vehicle, provided that they do not void the contract by wreckless driving, commiting a felony, etc.MasterCard and Visa in the US say they cover "Physical damage and/or theft", but an introductory paragraph for some MasterCards and all Visa cards limits this to "collision or theft", so vandalism and hail are excluded.Other issues important to some renters are that Discover and Amex cover only the cardholder, not helpful when people share a car rental.Some Amex and MasterCards are not useful on dirt or gravel roads, since they exclude "Damage sustained on any surface, other than a bound surface such as concrete or tarmac".The main difference among the cards is that Discover covers nothing else; Visa and some MasterCards and Amex cards also cover theft, while other MasterCards and Amex cards include theft, vandalism, hitting a deer or chipping a window, so they provide much broader coverage