 Carfax reports that over 450,000 of flooded cars were back on the roads in 2023. Once a flooded car is totaled, it's supposed to be given a salvage title. Though Consumer Reports has reported that some flood-damaged vehicles reappear with a clean title. Saying if you're buying a used car, always check the National Motor Vehicle Title Information System, which directs you to government-approved providers of vehicle history reports.