Expeditions: A MudRunner Game

Once you get at least 15,000 credits you can do this method.

You can buy the vehicle Don 71 for 15,000 dollars in the Truck Store via the garage section when at the headquarters menu.

When doing this it counts towards purchasing a vehicle and you can immediately sell it back getting all your money back which also gets you progress towards the money achievement as well.

Repeat this 10 times to unlock this achievement.