RE: Classic Pattern Transportation Trailer??
Cheap tile (I wouldn't put the good stuff in my trailer) is about $1.75 a square foot at Home Depot. That would put 60 sq ft in your trailer around $100. If you know a flooring guy and aren't too picky, you can probably pick it up a lot less from his leftovers.
I found out the hard way that the floor tile I used in my old kitchen is NOT fuel resistant. You might want to check first.
Either that, or Fly Electric!
Andy