Move back into small, interior rooms on the lowest floor, and stay away from windows and doors. If the trailer community offers a storm shelter, go to it immediately. If not, look for a permanent structure nearby, like a store, house, or community office. If you have only seconds before the tornado hits, then get out of the trailer and lie in a ditch or even flat on the ground. We see it time and again, tornadic winds can demolish trailers.
Tornadoes move fairly straight along their path.
So, if you are able to outrun a distant tornado, you'll probably be fine. It's those tornadoes close by that you shouldn't try to outrun. If you see a tornado very near your vehicle, get out and go inside a house or building nearby. If that isn't possible, then seek shelter under a concrete bridge, in a ditch, or flat on the ground away from your vehicle. Sure, but you won't need much.