[Starstruck]

the format takes real couples whose relationships are on the rocks, has them fornicate in the box

I think I can connect the dots here.

[Buckeye McFrog]

How about a series featuring a taxicab, rigged with internal cameras and microphones, that goes around New York City picking up random strangers offering them cash to fornicate in the back seat?

We can call it Crab Cab.