The story had got picked up by AP or UPI or something and it circulated throughout numerous US newspapers including Alaska and Hawaii during 2007. I don't know what ever became of it but apparently he discontinued the station sometime prior 2018.
I thought his ground system shown was interesting the way he set it up on top the asphalt parking lot and all, but it seems to me it would have been a more effective (maybe) to have simply parked the truck at the very edge of the parking lot so he could just drive a ground rod into the soil. The transmitter was home built, or so it appears. Anyway it's a cool story, I vaguely recall it being discussed about 20 years ago. There was also another about a guy broadcasting from a decommissioned railroad car - or caboose around that same time.. seemed to have lost the specifics somewhere down the line, have to try and drag that one out again..