You've already added the music of 3 of my fav games...Outrun, Turbo Outrun and Super Hang-On....why not add more! More options...moAr bettAr!!! I think you should add music from:
After Burner
Space Harrier
Thunder Blade
Galaxy Force
Power Drift
GP Rider
Super Monaco GP (for short diddies)
Pretty much all the Super Scaler games....hell...even Daytona USA music would be fitting in this racer!!