If you want to test out your mods or test out certain vehicles or items in the game, or even just have fun cheating in items and vehicles, you can do so with these steps.
Note: In order to use the following steps, you must be logged in an admin account.
1. Open the Admin Panel
2. Click Items List Viewer
3. Double click an item to spawn it into your inventory.
1. Right click anywhere to open up the menu
2. Click Tools → Spawn Vehicle
3. Select a vehicle and click Spawn