Don't have any photos but I think I can out do you! Gentleman was launching a powerboat at my sailing club a couple of years ago and forgot to put the handbrake on his new Mercedes on. Car ran backwards into the water and floated long enough so that it came down on top of the raised concrete lip down the side of the slip. He had the windows open so it filled up nice and quickly. The recovery truck had to drag it off the side of the slip to get it out (we found the catalytic converter at low tide). The highlight was when the car was back on dry land having been submerged in 3 feet of water for an hour or two - the driver tried to use the remote control to unlock it. Fortunately he chose a night when there was a barbeque on at the club so there were plenty of people around to enjoy the fun - sorry, I meant to say "to sympathise with him"