would an electric engine that can be used for the crafting of a vehicle of some sort be made to also work with BuildCraft to run the quarry on an electric engine?
i figure since it wont be a completely useless item that it having 2 options on what to use ti for then it could be an alternative to running a quarry
and if the player doesnt have buildcraft then its still not useless since its needed to craft a vehicle of some sort (if they are being added)