If you hang out at the DS message board, you may have seen this same topic posted. I thought I'd post it here as well:
AiRace is a flight/stunt racing game (Air Race) made for DSiware that looks like it might have been inspired by Pilotwings. You can get a little more info and see screen shots and a video here:
It has a single and multiplayer campaign with 9 different aircraft and at least 6 different locations, including the Amazon River, Aircraft Hangers, City Storm Drains, Great Canion (Grand Canyon?), Land of Ice and Streets of New York, with each location providing its own set of environmental challenges and power-ups.
There is also supposed to be a companion game called AiRace: Tunnels, but I haven't seen any info about that on the site. I also haven't seen anything about a release date yet.
Metroidmetal.com Metroid music remixed to metal www.backloggery.com/sleeper_hits <-- games that went under the radar