To add to the info from Jim Carter's site that bartamos linked to, Chevy cars in 1954 (and I believe 1953) had the "keyless" feature, with lock, off, on, start positions. The only one that required a key was to get it to lock. The key could be removed in the on or off position. A '54 Chevy station wagon was one of the family cars I learned to drive in.
