Those are 2 questions actually
But that's ok
I've been trying to figure out animatronics myself. And although I know just a little, it is enough to know I'll probably never be able to learn it. Changing a lightbulb is as electronic as I can get. Unless you know ALOT more than me about electronics I wouldn't really pursue this on your own. It's also really expensive. Too bad though because I love the possibilities of animatronics and I'm full of ideas on how to use them with bunraku for instance... But alas
As for the bike, those are just wires. But yeah
It's impressive. Just check out the making of the Ford commercial with Kermit. It looks so complicated but in fact the solutions are often simpler than you'd imagine (I'm not saying it's easy to do ofcourse)