One of my favorite of all American tracks . . . Riverside Raceway, Riverside, CA 1957 - 1989 the track had 3 layout options (long, short & NASCAR) & a couple of re-designed turns over the years. the track no longer exist, but the dirt supports a shopping center these days, so is licensing even an issue?? hardly a tree for miles, just a bit of desert scrub & that old California black top . . . how hard could it be ?? forgot to mention the occasional dust devil that would go dancing thru . . . certainly could be entertaining. there's another track pretty close to this one you may have heard of . . . Ontario Motor Speedway, an oval with a pretty good infield course, just sayin'.