vacuum

[Dick Nyquist <dickn@hpspdbc.vid.hp.com>]

Not only have I driven Chevys with vacuum shifters (bad) but I still own an
antique bus with vacuum assisted mechanical brakes (very good). 

As to wipers the only vacuum wipers I ever found to always work well were in my
'57 English Ford Console. It had a large vacuum reservoir with a check valve, 
so the wipers would work even when you were passing a car in the rain. 
( I was a teenager in those days and passed a lot of cars in the rain.)

Dick N