You'd need to ensure every electrical connection is in a waterproof location which I'm pretty sure is not a thing for any standard car manufacturing. Cabins are also rarely watertight.
AFAIK your best bet is a diesel with a snorkel, and hope things have dried off before you need to restart the engine.
AFAIK your best bet is a diesel with a snorkel, and hope things have dried off before you need to restart the engine.