True story. A friend, of sorts, came down here to Louisiana a few years ago to pick up a TR6 from the estate of his deceased wife (very sad, died young). He was driving a very old Suburban with lotsa miles (not a bad thing) but chose to purchase one of those welded-pipe utility trailers with wooden floor and single axle, no brakes, to haul the TR back to Connecticut. I tried mightily to talk him out of it. Those things are great for going to Home Depot or the dump, but not much else. To make it even scarier, it had no chocks and he only had it tied down with a group of AutoZone Chinese tie straps. Even scarier.
Yep, it launched somewhere around Tennessee, right into the back of his Suburban, only after he jackknifed it.
I know, many of you have hauled cars all over creation with utility trailers and have never had a problem. I am just too much a scaredy-cat to attempt that. Having rented a U-Haul auto transporter enough, I can trail those things at 70 mph and never look back.