datablock WheeledVehicleData(PoopMobileVehicle : JeepVehicle)
{
//Only the values from the Jeep that you want to change go here.
};
The only trick here is that the Jeep needs to be enabled.
You'll want to do a check for whether or not it is enabled, and, if not, exec it, then set its uiName to "". If you are unsure how to do this, check out the code in Space Guy's Dual Guns Add-On.