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Old 05-31-2011, 05:56 AM
MsRobyn MsRobyn is offline
Straight Dope Science Advisory Board
Join Date: Mar 2000
Location: Between the Moon and NYC
Posts: 13,019
Originally Posted by enipla View Post
Uh... Wouldn't you just turn off your headlights?

With that said, I do sometimes use it on night time drives.

And a count down alarm on a watch is great for cooking. I use my phone for this also.
When you leave the drive-in you need the parking lights so you can see to get out. That's when the dimmer is good.