Actually Dave,
If a diesel sucks water it is going to blow out a cylinder wall, while a gasoline engine will probably just lock up from hydrostatic pressure, or maybe bend a rod. So the choice is cylinder or block replacement (diesel) or possible rod replacement (gasoline). If you read one of my earlier postings I drove a Honda Civic under water three times, and it still came back for more.
I am not real worried about the price of gasoline in the U.S. It is still half of what people are paying here. Sometimes I wake up in the middle of the night, worrying that British Airways won't honor my return ticket, because all the infrastructure in the U.S. has collapsed, and there is no place for them to land there. But then I roll over, thinking that that wouldn't be so bad.
Earle