Started a thread on 5/17 re a proposed trip to California from Phoenix. The results are in, and generally I was very pleased. PHX to the Queen Mary, exactly 400 miles from our 'gas up' in PHX just before we hit the road. 49.8 on the gauge. Included about 4 stops for food and some picture taking by the windmills outside of Palm Springs. Speeds from 70-80 mph on the freeways until we hit LA. Then some pretty heavy traffic. (made a pit stop outside of Palm Springs near a George Patton museum, gas was $3.619 for unleaded, needless to say we didn't 'top off'.) Trip from Queen Mary to San Diego yielded over 53 mpg because we took the scenic route along Pacific Coast Hwy. Much lower speeds going through Beach communities. Then some stop and go in and around the downtown San Diego area. About 49 from San Diego to Palm Springs. Some pretty severe upgrades at highway speeds. NAV system sent us through some beautiful backroads that also yielded some good mileage. Climbs not too severe and speeds a little less than freeway norms on that section. About 48.7 from Palm Springs to Blythe, Ca on return. Then BAD mileage (40.4) from Blythe into Phoenix. Steep climb from California border to just outside PHX most of it at 75mph just to keep up with traffic. Never caught back up to earlier numbers, but still have about 3/4 of a tank to go. Some other observations. This is my 1st NAV system and while I see a lot of criticism on the website here, I was pretty impressed. Some flaws. But generally found it to be reliable and accurate. Gave me near perfect direction to both specified locations and intersections. (Only downside was between the NAV lady giving directions and my wife alerting me to the fact that I wasn't going at least 5-10 mph over the posted limit I didn't have a moment without some nice woman giving me an 'order' of one sort or another.) :blink: Overall a great trip. Mileage just a bit over what I was hoping for and expecting. One final observation. You Californians sure jumped on the Prius bandwagon!!!! Saw 10-20 each day betweeen highway and parking lot sightings. If I can figure out how to do it, I'll post a nice shot of the Prius by those energy generating windmills near Palm Springs.