This is kinda pushing it, cause it's not ambient by the strictest definitions, but Shawn Hale skating to OPN is the closest, most recent example I can think of. Non-traditional song structure using new age-type sounds.
www.youtube.com/watch?v=YS7RwZvaKDEAnd don't forget about PJ Ladd skating to John Cage-4'33
www.youtube.com/watch?v=68hSZm5GFOYI'm sure there's better examples I'm blanking on.