I use a combo of either Bar-buoy or caddie-buoy and have in my cars for
years,
The drawback is that you have to semi-perm mount the mounting clip to a
secure part of the dash.
 but it's very stable, even in my cabriolet ana baja.  I buy extra
mounts for each vehicle and transfer the cup holder to the one i'm
driving.   sometimes I forget  but for the most part I like them
http://www.allaboutboating.com/store/products/doSearch~manufacturerID~BAR-BUOY.htm

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From:    Jonce Fancher <strtbug@ATTGLOBAL.NET>
Subject:

hi all
i need a place to put my pepsi/coffee while driving. im tired of the
between the legs of ballancing act on the dash or between the front
seats. i picked up at a vw swap meet a slick item that if you take out
your ash tray/ change holder and slip in a beverage holder.its in my
71
bus and now im spoiled so now i need one for the van wagon. anyone
know
of anything that will work. thanks a bunch. Jonce