Where to begin? How to begin?
I see no reason why anyone would want to pull off this kind of stunt other than when filming a scene from Indiana Jones or other action movies. But even with movie scenes, safety precautions are set up to ensure nobody gets hurt or dies from these life threatening stunts.
Then there’s this guy. Some lone guy climbs out his vehicle’s window, while driving, clambers across the windshield and climbes back in through the passenger window. Granted, no one got hurt, but the amount of possibilities that could go wrong out weigh making a cool video for YouTube.