Beetle Tanks
Bovington Tank Museum Curator David Willey talks about the WWII German Leichter Ladungsträger Goliath, designated the Sd.kfz 302 (when electrically-powered) or Sd.Kfz. 303a/b (when powered by a motorcycle engine) or better known to armor nerds as a beetle tank.
While it looks like a mini-tank, it is actually an early tracked remote control mine/demo charge.
Interestingly, the Soviets used remote control T-26 “Teletanks” and others as early as 1940, but that is probably the subject of another video somewhere.