This guy is obviously talented, but the way he sketched it out at the start makes me think he's using a tablet. I have one at home and once you get used to it, it is easier than using a mouse, which I think most of us know is pretty hard when it comes to drawing. At least I've always found it to be.
Regardless, it's way better than anything I've ever done.
I agree withe Reed. He is definitely using a tablet, no doubt about that. Nontheless, he did an awesome job on that. The details in the wheels to make them look chrome is amazing.