A garage that has more cool stuff than most, and nothing less than cool

A tire mount and balance tool box originally

 A tool store display of taps and dies

the sign a vehicle had to display if it were being operated by a newly licensed driver, to warn all the other traffic that it's not as experienced on the road

 The above are on shelves, that are really Model T running boards. Isn't that awesome?!

Not many Rickenbackers were made

Possibly a carnival sign?