Look, I'm not trying to make fun of you, I'm just trying to point out the pointlessness of trying to include every kind of object that could be used as a vehicle, the list is endless, you could have sledges, hangliders, bobsleighs, rollerskates, scooters (the non-powered kind), wheelchairs. Is this what "no limitations" means? Or have I jumped to conclusions? But seriously how would you list horse-carts??

Also, would it be pointless to create an Aircraft Database now, if you are going to create an all-encompassing Movie Vehicles Database a year from now (or sooner)?