RV Fuel Issues & Prices - Post 'Em Here!

Where I park downtown (to get a free charge) the spots have a lot of DTE (our power company) cars parked also. Some of the cars are Volts and an occasional off brand. Yesterday I noticed a Ford pick up and a Dodge pickup plugged in. I happened upon an Edison guy who was taking out the Dodge and he said they were "commissioned " to test the two pickup with the electric.
Hmmmmmmmmmmm interesting. One thing with a pickup there would be places to stick in a battery pack.

I wonder just how many people pay the "cash" price as opposed to charging their fuel?