Woman sinks SUV trying to help a guy out

A woman's SUV ended up in the water and clearly she had to hit that eject button and get out, or she was about to sink in the water with it. She tried to back up so they could hook the waverunner up to it and get it out of the water, but she backed up too far and down goes the SUV. What a shame too, she was just trying to help the guy out and she ends up losing her car in the process. Why didn't the guy just drive close to the edge, then jump off and walk it over? Like, how dumb are these people?