Runaway Toyota.

[Greddypacked]

Those were mostly originally made for semi trucks... sometimes trucks have a huge load and the truck can weight so much they heat up their brakes when used improperly, so they tend to lose their brakes and they cant stop. Those are run off ramps just incase this happens, and that picture is probably photoshopped. Trucks usually stay in 3rd gear or so going down those steep highways, and alot of times they will have the airbrakes active to avoid heating up the brakes.

Highways like that have a steep downhill posted on the signs so the drivers know about what speed to drive. That is a 7 1/2 grade so that's a very steep steep downhill, so the drivers would need to drive very slow and cautious w/ a full load.