Done! I've created a 3D car racing game with:

- **Circular race track** with barriers and checkpoints
- **Generated 3D car model** with engine and tire screech sounds
- **Lap timer** with best time tracking
- **Third-person chase camera** that smoothly follows the car
- **Realistic driving physics** - acceleration, braking, steering, and drifting

**Controls:**
- **W / Arrow Up** - Accelerate
- **S / Arrow Down** - Brake/Reverse
- **A/D / Arrow Left/Right** - Steer
- **Space** - Brake (touch: use on-screen buttons)

**Next Ideas:**
1. **Add Opponents** - AI cars to race against with rubber-banding difficulty
2. **Multiple Tracks** - Add a city track or mountain road with elevation changes

**Ready to level up your game? Pick one and let's build it!**