Dare I say publicity for new Transformer's movie coming up. That movie has some great CGI to it's aid.
Even if this wasn't based on a Cooper, Here are some flags:
1) This guy, as you have pointed out, has built a robot in privacy that Honda, Sony, and the world's leaders couldn't build.
2) Given that, he is very quick to release photos, plans, and video of it.
3) He's engineering this to be autonomous.
With that said, we'll push it farther:
1) Since he's used the Cooper as a platform, it's logical to assume to that he plans on building a transformer. He wants to drive this somewhere.
2) His robotic arm test is reticulated in an axis that the arms mounted in the "photo ops" are not mounted. Different arm.
3) If he is successful not only in building a robot that can move that well, but also transform - We're talking about a guy that has overcome countless engineering problems since the 40's.
But hey, good luck if it's not a scam. I'm leaning toward it being a hoax, and a trailer for Transformers
-> Steve