[Derryd]

How can I add a train to my vehicles database?

Because the train also adds like 3-4 extra vehicles when you spawn it, and this fucks up the order of cars.

[Zh3r0]

What do you mean with those 3 extra vehicles? The wagons?

[decondelite]

One BASIC thing: trains can NOT be added/deleted dynamically.
You HAVE to create them with AddStaticVehicle in OnGameModeInit.