Cars normally do stuff like, you know, drive on roads.
It also floats for good measure.
Tesla CEO and co-founder Elon Musk is obviously pretty hyped about its hidden maritime functionality, tweeting out:
There you have it.
It first made the rounds over the weekend, and shows the car 'rowing' through the flooded tunnel and emerging without a scratch.
What's even more interesting than the floating Tesla, though, is Musk's apparent commitment to developing a sports car-cum-submarine as part of the Tesla line.
Give it a watch on the commute home but remember what Elon said, kids – don't try this on your next holiday to the Lake District!