Wipers The Keep Your Headlights Clean
Wipers that keep your headlights lights clean were originally invented by General Motors back in the early 1960s.
This was an excellent idea that enabled drivers to see in bad weather.
The invention would divert a jet from the windshield washer to spray the lenses and wipe them with a blade whose pivot point would be ratcheted around the lights. The blade would then snap out of the way.
In more recent times this idea has been improved yet further and the blades have now been completely replaced by high-pressure water jets.