Left hand lug nuts are back, baby!
"I don't know." Even big over the road trucks trailers used them when I sold parts back in the 70's. So I'll ask this:
'Far's I know GM did not use them. So how come you don't see hoards of GM cars along the sides of the road with one side wheels fell off?
How 'bout lawn mower/ small engine/ outboard flywheels? I've never seen one with a "left nut" and they never come loose..................