1. Join a A3Wasteland server.
2. Respawn and drop a pile of money on the ground.
3. Use a bandwidth limiter and limit the bandwidth of yoru PC to 0.5 KB/S.
4. Start picking the dropped money. Your money will start increasing while the pile of money stays on the ground.
5. Disable the limiter and drop a pile of money worth a much more larger amount.
6. Go back to step 3.