I follow Delko Duck tumblr work since I heard of Turbo Run, and I really like this new game you are developing (Drift Stage). I see a lot of references of car video games, like Outrun and Cruis'n USA and others, in terms of visual design. So for other technical spects and game mechanics I recomend you to take a look of Auto Modellista.
I didn't see any reference of the underrated Auto Modellista on any of your developing blog.
I played Drift stage Alpha and I really enjoyed but I miss things that I see in the mentioned game. In Auto Modellista there are a lot of game design tricks that make a great global experience: the pipes of the car rumble, when you go out of the stage there are some anime tricks like black vertical lines that represent vibrations, when you gain speed there also has effects for speed sensation, suspension system, etc. There are also a Tune-Up mode.
If nobody played, you can play it in Dolphin Game Cube emulator.
Auto Modellista Random Guy review
Sorry for my bad english, I'm from Barcelona :S
I hope you can take a look of that game.