I voted yes, but it's only on the condition that a FT inside+driver combo makes driver pay the entire shift. It could in theory get excessive overtime down by having people do driving in the later parts of the day to take what's left, and as long as they're getting paid driver pay for their inside shift too, it's not really exploitable by UPS to have people driving for cheaper (other than by reducing OT, which I think most people want anyways).
There's probably some issues with it I'm missing though.