I bought a new XC70 in April, so I haven't had a chance to test it in snow and ice. I do a mix of city and highway driving and have averaged 24 MPG. The car handles well and is nice to drive, although I find the transmission hunting for gears sometimes. I had heard that the transmission is adaptive so that this may stablilize once it adjusts to my driving style.
The seats are really comfortable and supportive. The Blind Spot System has saved me on both the highway and from many New York cabs. Park Assist is convenient for street parking.
Maybe put in a V-8 like the S-80 or one of the European TDI's.