But they use high bond glues for some sports cars don't they? I agree though, there is no match for actual welding of metal.
I actually use some Permatex plastic weld epoxy to fuse ABS hoods back to together after customer smacks a tree. Kinda wish they came in John Deere green instead of just cream and black colors. It actually melts the plastic back together.
I try JB Weld and was highly disappointed as it didn't even hold at all.