After just completing successfully a one-day Alamo car rental to get ourselves from Miami to Fort Lauderdale, we discover in David Rowell's invaluable The Travel Insider Newsletter an account of an extremely unpleasant experience endured by a woman who had reserved a car.
Hertz, of course, was in bankruptcy for a year, but that's no excuse for what happened to this woman, her companion, and her elderly cocker spaniel. She wrote a detailed letter to Hertz that went viral on Twitter and Hertz has already promised her compensation (the fact she's a practicing lawyer doesn't hurt her cause).
Hertz has of course done even worse by customers. if you consider getting thrown in jail worse.
Something to think about before your next car rental.