Suggestions -
Add an auto-run option
Knockback to player and car from rockets and grenades
Auto pickup of wood (very tedious)
Adding a scope to the GR3 (or being able to direct the rocket)
The thing that is weird about this game is that the music is similar to "Super Karoshi", a game just like this one but it was made by different people.
 "Cube Escape: The Lake"){kind=icon}
 "Madness Interactive"){kind=icon}
 "Island Escape beta"){kind=icon}
 "Wish Upon a Star"){kind=icon}
 "Kick Out Bieber"){kind=icon}
 "Dolphin Olympics 2"){kind=icon}
 "The Visitor: Massacre at Camp Happy"){kind=icon}
 "Flaming Zombooka 2"){kind=icon}
 "The Unfair Platformer"){kind=icon}
 "Epic Combo!"){kind=icon}
 "Freeway Fury"){kind=icon}
 "Roly-Poly Cannon 3"){kind=icon}
 "Sushi Cat The Honeymoon"){kind=icon}
 "DuckLife2: World Champion"){kind=icon}
 "Cursed Treasure: Don't Touch My Gems!"){kind=icon}
 "Secret Exit"){kind=icon}
 "Anti-Idle: The Game"){kind=icon}
 "Seed of Destruction"){kind=icon}