I once had a 1982 Subaru with three headlights; there was an extra one in the middle that could be turned on independently of the others. We called it a third nostril. Driving in rural Bucks County, PA at night, when a car came towards me I'd turn on the third nostril in the hope of passing for a space alien. They probably didn't think that, but I'd like to know what they did think. In the fullness of time, that car laid down like a sick animal and it just couldn't get up. It stopped eating. I held it and petted it while the vet gave it the injection, and then I buried it in a shoebox in the back yard. Poor little Subaru . . .

Actually, when its time came, I sold it to somebody for fifty bucks. The electrical system was completely shot to hell and the rear wheels couldn't be removed.

Anyhow, with a sufficiency of 1982 Subarus, an overall average of two headlights per car could be maintained indefinitely.