Futurama

This one may indeed be a fever dream. I keep hearing whispers from social about mini-tanks showing up in US citites. And as horrifying as this is, I get a little chuckle when this image pops into my head of Shriners driving tiny tanks around in a march to war. I could have SWORN this happened in Futurama, but I don't see it in Ghost in the Machines (parade day), or War is the H Word, and I just can't place where else it would have been, well, unless I'm imagining it, which is absolutely reasonable.

Any assistance would be greatly appreciated.