Gonna make me work?

I didn't find the one I was thinking of, but this was squirreled away on Imgur:
It suggests an angle of 70-80°. That could be clear [Fresnel lens] over the tail lights, a common hurdle. And it supports my chamfer hypothesis.
edit:
How about an infinity mirror box cavity?
https://www.motortrend.com/news/10-w...a-show-builds/
The wheel has an half-silvered front face; if it were clear, the tunnel would go to infinity ...or, beyond the license plate.