As you might guess, going for an open world game in a jam is not the greatest idea because how much of a time sink it can be. But the world actually ended up being pretty nice! Race the the intel points marked on the map and return the base. Collect money as you complete missions that can be spend on upgrades! The game even has upgrades for the car, lots of different missions, and a local high-score system for each of the missions.
Here is also an overview of the whole map.