Allan, the trailer memory that sticks out in my mind, is one I saw as a teenager, on a narrow, 2 lane hiway, musta been mid to late 50's, was a VW Bug, which were rare anyway, in front of a U-Haul, tandem axle trailer, maybe 10/12 footer enclosed, and as it crossed in front of me, there was a slight hump at the intersection, and that VW just lifted like it was on stilts, the trailer remained level, I watched it as far as I could see it, and they were managing to keep it on their side of the road, but I'll bet the pucker factor was real high. Some folks can get by with anything, but me, I like to at least think I have some control over what happens, I've had it happen, and I've seen it happen, where the tail wags the dog, and it ain't pretty, and it doesn't take a large trailer to do it, just the right conditions. Bob