Well the trip is over, and I am back in Austin in summer school. The quick summary: CNG is cheaper, more fuel efficient and, lets be honest, more fun than gasoline.
I have had a chance to recheck all of my numbers and account for what was left over in the tanks. My revised estimated mpg numbers are:
Gasoline = 18.57mpg [...]

Here are a couple ’summary’ videos compiled by two of my trip supporters, Texas Gas Service and America’s Natural Gas Alliance.
The Texas Gas video includes an interview with TGS employee Terri Green who discusses local rebates in the Austin area.

The ANGA video wraps up some of the activities the road trip crew did while in [...]