Hot wheels from the 70s and 80s were deadly weapons ... you stepped on one it was like stepping on a roller skate, you broke one it turned into knife and if you threw one, you could cause a concussion. Even just opening up one of those damned things when you were kid usually meant you severely cut yourself (I know from experience).
I have one or two hot wheels shaped wounds somewhere on my skull from when my brothers tossed these things at me in a fight .... and I returned the favor as well.