I thought about that too. The only (tiny) explanation given is that he uses that time to listen to the royalty-free music he's going to use on the show—which he wouldn't be able to do on a motorcycle. So the motorcycle is just a backup in case of traffic.

I got mine, too! http://imgur.com/y3dCFLy

Oh God, all the pieces are coming together: https://youtu.be/x4Ukn92U7M…