Looking at the code, all the requested features are already implemented:
1. **Distance meter** - DST display in HUD
2. **60-second timer** - `this.timer = 60 * 60` (60 seconds at 60fps)
3. **Checkpoints every 1000m add +30sec** - `checkCheckpoint()` method
4. **Score system** - Score tracking and display
5. **High score save** - localStorage save/load
6. **Speed boost when passing traffic** - `activateSpeedBoost()` and near miss detection
7. **Blue/red checkpoint banner** - `drawCheckpointBanner()` with red/blue stripes
8. **"CHECKPOINT!" message** - Displayed in HUD
9. **Game over at timer 0** - Game over state when timer reaches 0
10. **Retro UI font** - Press Start 2P font loaded
The code is already complete with all requested features. I'll return it with the missing `
Hello World PWA