Great effort.
I love Initial D and there aren't many flashes goign about on here so origionality gets a high. A few suggestions could make this game rock.
1. More choices of cars eg. Levin, RX-7FD & FC, Civic, Evo, Skyline, S13, Sil-80, MR2.
2. MAKE THE CARS DRIFT!!! It's what Initial D is all about!
3. A more detailed background would help a lot, maybe a mountain pass like akina.
4. Give the cars different attributes such as some should be faster, some better at turning etc. But all should stay equally as useful.
5. Race!! If there was a car to race againstit would be great. Follow the series maybe, or recreate your own story for origionality!
Well theres my thoughts, I'm actually tempted to get flash and make my own Initial D stuff, I'm a nut for it! Mwahaha. Great try any way =]