It's the air intake, rather than the exhaust, that suffers underwater. The scoop...

MattBearman on June 20, 2016 | parent | context | favorite | on: Tesla Model S floats well enough to act as a boat,...

It's the air intake, rather than the exhaust, that suffers underwater. The scoops you seen on proper off-road cars are actually for the air intake, hence them being called 'snorkels'.