Execution vans aren't a real thing, though. China does have the death penalty, but not in this comical way, same as PLA suicide helmets. I've seen the claim before, but it's ridiculous to believe them. You can see that the sources in the Wikipedia article don't even back up what is claimed.

As for the idea that "a lot of dictators have 100% approval ratings," I don't see how it matters. Fear of the possibility of something isn't evidence of it happening.