I have to agree with Jim, that it is not a fuel issue, at least not with the fuel in the tank, especially since he drove it home, if there were contaminated gas in it, he would have seen this problem as soon as he accelerated, especially with a carbed engine. Enough water to cause this problem in a car is very rare, it would have to have been sitting for a years and would have to have been E10 fuel, and even then I don't know. Extremely huge problem with boats but very rare on cars.

I'd agree though that is is a fuel problem as far as fuel being supplied to the engine, I would start off by checking the choke and look for any vacuum leaks.