1. Go to the editor
2. Select a unit (infantry) and set as player
3. Select an ATV/an Ifrit/a Hunter/a helicopter/a boat and set it right next to the player unit
4. Set a waypoint (move) for the vehicle unit to a position 2000m away from the player position
5. Click on Preview and watch the vehicle driving/sailing/flying away from your position
6. Listen to the engine sound ---> suddenly disappearing at a specific distance