You might be surprised to learn that the Nash wagon weighs around 2500 pounds while a Prius is 2932. The real issue is width, not weight. I believe the Prius wheel tread width is nearly 6 inches wider than the Nash, which will make transplanting the vital organs difficult but not impossible. It just may take 2 wagons (!) to pull this off. Remember the goal is a high MPG daily winter commuter rod, not a show car, hot rod or performance vehicle. I've already got that covered to my satisfaction.