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A friend of mine just replaced the camshaft and all sixteen lifters in his Ram truck with 115k miles.
I've never seen anything quite like it, but apparently this is a common failure-mode on whichever engine he has. The roller bearings just completely seize up, and I guess the rollers are harder than the lobes.
Many places in the U.S. will allow these carts on public roads as "neighborhood vehicles" on streets with speed limits of 35 mph or slower. It's important to remember that these crashes happened at those speeds, and they share the road with other full-size cars too. So next time you take a golf cart up to speed, remember this video. They arguably offer pretty much no protection from injury at relatively sedate speeds. I'm not saying wear a helmet or anything, I'm saying avoid traffic and large stationary objects.