Scratch built for me by my Dad.
He put me in it at 4 and said no instruction was necessary - I took right to it.
I do not recall ever being "supervised".
It ran on gasoline; about as fast as a riding mower.
The '55 Chevy shown in the background was brand new.
It had forward and reverse.
Hand hammered steel bodywork with a cut-down Lasalle gril.
The dual sidepipes were functional.
It was featured in
Popular Science and
The Cleveland Plain Dealer.