I tracked this guy down and sent him a thank you email. Here's his response...
Monte-
Glad you enjoyed the video! I had a lot of fun doing the project, but what' really interesting is how popular and where the crazy thing is showing up. Today will probably cross the 500,000 hit mark in 8 weeks. I never dreamed it would do that.
I'm in Austin as well most of the time. If you have any questions on the effort, how I figured out routing, etc, let me know. I'd be pleased to respond. Basically I put push-pins in a texas map and said "hmmmm, where am i going today" and pointed the bike in that direction. About that simple.
Again, thanks-
~scott