All valid. Glad you liked it :)
- I was toying with the idea of freely looking around, and having to use the mouse to interact with everything (drag the steering wheel, click and hold the ingnition key) but limited time meant to the bare minimum to get it working
- I think in future I'm going to have the engine dead slow you down, not a full stop but not full speed
- I don't think I'll change the steering, but I may add a sensitivity option
- Rocks were an easy model to add :P I was hoping to have more varied obstacles like trees, bushes, and a garden to avoid that would penalize you
- Cause of how I was calculating cut grass a percentage didn't make sense from a dev perspective, but it probably would make more sense from a player perspective
- I think the speed adds to the chaos, but perhaps there could be difficulty levels (like mariokart's 50cc, 100cc, 150cc) that change the speed
- Again, I'd love to add more realistic decoration in future