[BlueDragon]

I remember my fear of hills with traffic lights at the top.

http://en.wikipedia.org/wiki/Hill-holder

Going to this page and clicking on the image to enlarge, might help one figure out how such devices as '50's era Studebaker "hill holders" functioned.

[Mears]

I’m amazed that things like this actually exist and that I never heard of them.

Thanks for the most informative post.

By the way,enlarging the image won’t help me at all,I’m proud of myself when I put in windshield wiper fluid. :-)

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