How-long before this tool shows-up on a click-bait ad for "old tools which are obsolete, no-one passes this quiz"?
They can pair it with the red-handled tool for removing/replacing the drum brake retaining springs' keepers, for the shoes, and the drum brake spring stretcher tool.
Maybe the half-a-valve cover for setting valve clearances, too.
The flexi-shaft screwdriver for making carb adjustments, and one for the Delco-Remy points dwell gap.
The offset box wrench with the 90 degree bend, for the distributor retaining screw.
A Marvel Mystery Oil top-end lubrication system.
For motorcycles, Snuff-R-Nots.
Curb feelers.
'Necker's knobs'
Combination rear-view mirrors/spotlights.
A tonneau cover, displayed off the vehicle, for a sportscar. The full one, with the pocket for the steering wheel.
A Curta 'coffee grinder' calculator.
A single velocity stack.
A timing light. The one with the dwell meter in the end.
A Uni-Syn carburetor balance tool.
A mercury multiple carburetor balancing tool.