Okay, so, I've come up with like a few good suggestions here.
First 2 are to do with cars. The first idea is their should be like car armor you can add that would make your car stronger and able to withstand attacks from stronger robots. That way people can park their cars in areas and fight without worrying about blowing their car up with fire from the robots. My next suggestion is about movement, you should have to option to change the turning system to like a 45 degree one. So, like a drive mode 1, and drive mode 2 for cars maybe. Sometimes 45 degree turns are easier especially when trying to turn around in a tight spot. Also, a side note, metal either needs to be made cheaper, or cars do, cause as it stand right now, it's literally cheaper to buy some cars then to repair them. And finally, their should be transmissions in the cars, so we can change gears and more importantly put the car in reverse. Adding gears to cars would also make them go faster, which would be cool, and would simulate real driving even more.
My next suggestion, is their should be a safe zone like every 3 maps or something. Or strategically placed in locations where their isn't one too far from you at all times, so that way people won't have to walk literally through 10 maps every time they want to go back somewhere especially if you die. Maybe make it like a home point type of thing where you can set which safe zone you want to return to when you die.
Also, now that we have a bunch of places to travel too and stuff, you guys should think about adding quests or missions.
And the last thing, the sell system needs to be changed, so that way people can sell the weapons that they pick up that aren't available for purchase. Maybe make 2 letters work in the store, like s to buy something, and shift s to sell. Or maybe add something to the inventory, like press space on an item in the store to sell it.
Also, when are weapon drawing sounds going to be put in, And like sounds for picking up ammo, and weapons an stuff.