I'm not deep into gamer culture, so it's foreign to me. I did watch this:
The Man Behind The Secret Service Limo VIRAL Video QnA- Don Joewon Song | SLAPTrain •Apr 18, 2016
Apparently it had a bazillion views on Faecesbook and a story on Jalopnik. He talks about the tune (low-pressure street tires, positive camber, etc.) to make it handle in the physics engine. This wasn't algorithmically driven, it was a performance.
I could speak more to the rendering engine. Forsa doesn't handle smoke and haze well at all. No examples of bad collision detection in this one but when they go off-road they can drive right through trees.
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On the wall, it sounds like it's already working, 90% or so. I like the idea of robots running back and forth, but I think they should carry a big, hairy eyeball. That would stare at anything suspicious.
What do you think of this design without the anti-climbing plate at the top?