Making a car difficult to steal

I knew a guy back in the 80's, who owned a sweet custom '57 Bel Air.
He called it "Windy Blue"... since it was a custom shade of blue.
He would literally chain his car, to the garage floor. Big heavy chains over the front A arms, and same over the axle, all locked down, with H.D. padlocks to plates he built into the floor. He would also remove the distributor, and steering wheel. He was really anal about that '57 getting ripped off.... which never happened.