Ride the Stars!
An interesting racing game that keeps some great Kirby charm, the vast amount of power-ups and unlockable vehicles and challenges make Kirby Air Ride a good racing game.
There are 3 modes with 120 challenges. Unlockables include music, new skins, and vehicles. So there's a lot of content. These vehicles may be a bit unbalanced, but some of them are great for getting around. I personally like the Compact Star because it doesn't focus on one stat. The soundtrack has good remixes of plenty of good Kirby tunes, and offers some new ones.
The City Trial mode is my favorite, because there are many events in the city that can help the vehicle. It's like a race for power-ups, but its a battle for the win at the end.
This game is a little underrated. I like it more than most Mario kart games, and it's a little better than the F-Zero games.