Maybe the solution is right under my nose??
Maybe if I make a pusher trailer out of my 1985 VW Golf diesel. BUT! The two things I'd have to get rid of are 1) the black smoke screen at full throttle and 2) the extreme noise, reducing it somehow.
I guess the smoke screen wouldn't be that hard to get rid of. I'd just simply have to dial back the max injection until there isn't any visible smoke. That might not be enough to maintain 75mph (it already barely maintains 75mph at full throttle). But it should be enough to keep me going a lot longer between stations.
The VW already has tow bar hookups on the front bumper...
Engine was replaced not too many decades ago...
It gets as much as 60mpg as it is now...
The main things I don't like about my VW Golf are 1) the interior and exterior are shot, 2) it's noisy and 3) it leave big black smoke screens when I floor it and 4) it's very underpowered.