I think it is the Green Coast Curcuit (or raceway whatever ) https://beamng.com/threads/green-coast-race-track.3042/
That would be cool. However, the engine should sound like a 1940's car considering the fact that this is from 1948.
Yeah, I'm stating something that is blatantly obvious. Who am I kidding? Of course the engine is gonna sound like it's from the 40s.
Looks pretty damn good, did you think of also making an Mazda MX-5? Its a beautiful little roadster too and the only ones that exist are some weird russian meshlabs.