Just Another Great Morning Commute

This is the third day in a row there's been a serious, traffic-stopping accident on Route 315 South in Columbus. What you see above is the crash that added an extra fifty minutes to my commute. At first glance it's just another incidence of somebody barrel-rolling a full-sized pickup truck over a Jersey barrier. But it has to be more complicated than that.

This is the so-called "hospital curve" on Route 315. It curves around --- wait for it --- Riverside Methodist Hospital. During rush hour, it's typically either stop-and-go or very slow-moving. So while I'd believe that a truck could jump and flip over the barrier during the afternoon or evening, in the morning there shouldn't be any way for it for to have enough momentum for the maneuver.
Unless, of course, the truck was going north and it managed to both flip and spin before landing upside-down on the concrete.
I'm giving a lot of thought to this, because it happened at about 8:35 this morning. If I hadn't overslept a bit, I'd have been somewhere in the vicinity at the time. How was this a single-vehicle accident in the middle of a jam-packed eight-lane freeway? Sometimes it's just better not to think about it any more.