There's plenty of "extreme crash testing" maps where the only goal is to destroy your car, and there's a few Wipeout inspired "parkour" maps, but are there any with realistic stunts? Ramps of varying length with a kicker to catch them... maybe some two wheeling, slaloms, backflips, barrel rolls. It doesn't have to launch off a mountain to certain doom, just an amount of realistic attainable stunts.
There's lots of jumps in my So-Cal map, but you'll have to drive 120+ miles of roadway to find them all! If you enjoy speeding down a roadway and jumping a ponded portion of the road, and trying to land without killing the car (or falling short and sinking!) then it's for you.
I'd second this one, this map is awesome. Just take two FR16's and have one running away from you, and you'll get to the weirdest places. There was one bridge jump that I saw while whizzing by at over 200 MPH. And my own suggestion would be jackrabbit gulch, most of the jumps are possible with enough tries, and there's plenty of them. You also have a fair bit of cliff jumping nonsense, in case you get bored.