2005 Ford Escape Hybrid AWD 4dr SUV (2.3L 4cyl gas/electric hybrid CVT)
I have had my Ford Escape Hybrid for about 6 months now and have driven it in all conditions - plus a coupe of trips - one from Atlanta to NYC and back. Got great gas mileage and the Nav system worked without a hitch (we affectionately call our Nav system 'Dora'). Just keep the cruise on 55 for the best freeway driving and change your driving habits to get stay on electric power as much as possible in intown traffic.
Of course the gas mileage - but also really enjoy the Nav system with the many extra features it has (avg and instant mileage read-out etc.). Great sound system.
Exterior temp gauge would be nice but most of all be able to check 'points of interest' while the vehicle is in motion. Really don't want to have to stop to have access to see where the nearest hospital might be.