I checked my cars out last night, and it wasn't as bad as I had feared. The only thing wet in the maser was the floor, and in the chrysler the water got up to about the bottom of the seats. The damage should be covered by flood insurance, regardless of who owns the car, since it was on my brother's property. I don't know how it's all going to work out, but there's at least some hope. :)
Did anyone else have any 'secondary damages' like this?