So this popped up in my Facebook feed from my all-time favorite NPR show: Car Talk (now in reruns, sadly).  It's the upside-down truck, and it runs!

Click n Clack the Tappet Brothers (or whoever manages their Facebook page!) posted this on Facebook with the above pic and a status that reads:

Another angle on this unusual vehicle. Looks like it definitely runs -- the last picture we saw was at a gas station.

If it ever breaks down though, don't bring it to us! My brother wouldn't know which way to put it on the lift.

Thanks Michele!

Someone in the Car Talk Facebook comments mentioned it's from central Illinois.