Besides all the damage that it caused to homes, the recent flooding in Texas damaged 7,000 to 10,000 insured vehicles -- and that opens the door to the opportunity for dishonest used-car sales. Beware of used cars flooded in Texas Besides all the damage that it caused to homes, the recent flooding in Texas damaged 7,000 to 10,000 insured vehicles -- and that opens the door to the opportunity for dishonest used-car sales.