I think UPS should just say no to their business.
If you live someplace out in BFE, which UPS must use these trucks, you should find another delivery service.
4 wheel drive doesn't mean your going to be able to deliver to many more places than driving a p500 that has chains on. It however does mean that you run the risk of getting stuck as your more likely to use the 4 wheel drive as a crutch so you think you can really go anywhere when in reality you can't..