This sounds like a cool solution to a burning problem. The slide out, flimsy, right-over-the-window switches, tiny cup holders must be one of the worst design flaws in my '94 855. I went with an even cheaper solution. At my local Dollar General they sell cupholders 2 for $1. These are the generic kind that are made to hang from the doors. They won't in an 850, but they will slip over the glove compartment door. With the golve box closed, they don't slide around too much, and they hold a big gulp (aka glup cup) with no problem. The faded black color even matches the charcoal leather real well!