Flying Spaghetti Monster wrote:
I always wondered what exactly is happening when the Batpod's front wheel is spinning perpendicular to the road. It happens often in the new film but the signature moment is when he shoots out of the alley in TDK. It's followed by the Joker's comment: "So here's a Batman."
What is actually happening when they spin like that
The rear tire has a similar set-up, it's just more compact and harder to see.
Batman can just turn the front wheel and go in a circle in place (which he did in TDKR to align himself with the truck ramp and escape) or both wheels can roll and he can slide to the right and left. The rear wheel spin also helps when he popped a wheelie onto the wall and turn around in place in The Dark Knight