Turn signals for vehicles were invented and patented by Hans Gruner in Ponca City.
If OK is famous for the turn signal, why don't Okies ever use them?
Turn signals for vehicles were invented and patented by Hans Gruner in Ponca City.
Oklahoma Trivia and Interesting Facts
Other City Names In Oklahoma To Make You Smile
Bowlegs, Oklahoma
Bugtussle, Oklahoma
Bushyhead, Oklahoma
Frogville, Oklahoma
Hooker, Oklahoma
Loco, Oklahoma
Slapout, Oklahoma
Slaughterville, Oklahoma
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