It could be true, just for bragging rights, or it might be for fun, just for laughing rights, but it's on www.mercedes-benz.com as one of the car company's TV ads, and those guys aren't known for their sense of humor, but they are known for their auto-tech-better-dan-der-odder-ubers, so my guess is that they did it or did the commercial to prove they could do it.  Ain't such a strech to pull-off a stunt like this for the world's best German engineers with an unlimited budget...is it?