A few good ideas for an update or second game: more cars, more weapons, more armor, big arena for cars, co-op campaign, much more specific ammo, bigger shops, huge storlyine, bigger towns. + if you think these are great ideas.
EVERYONE PLEASE READ THIS for the sniper rifle if yours stops shooting or scoping I found that reloading your saved file will fix it (and minimap and health) + this so it stays alive