Speaking of clown cars I have one very curious incident to share back when Arad still had them.
My friend was driving and I manned the turret. We drove around the villages and took out unsuspecting tanks with hit'n run attacks. Then we ran into a Tiger that had us sighted, fired at us, and the projectile deflected. Not only it deflected like it hit massive star fort but the clown car was lifted good 200ft (or roughly 60m) in the air, we landed on top of a house, and then on top of a PzIV with the gunner exposed, roadkilled him, and the clown car rolled and flipped sideways like a marionette in the river before it landed upside-down. Bit later another PzIV managed to push us back in action and didn't even immediately realise what happened.
We managed to drive several laps around the villages before we finally got shot for good, but I have never again seen projectile-assisted-clowncar-flight after nor heard anyone experienced anything similar.