I stopped reporting on Prius numbers because probably no one cares, but also once I got over 70mpg on a trip I figured what else could I do?
Previous high was 71.6 on a trip from home-to-work. Hit 72 today.
Been getting into the 60s somewhat regularly on my two "high mileage" trips (read flat or downhill): home-to-work and work-to-daughters-gym. Most readings are in the 50s though.
I was curious to see what I would get from North Creek to our cabin, it's about 1000 feet of climbing. No way around it on our hill, you'll never get up unless you press on the gas. In the Prius you pretty much got to floor it. I got 38.1 which kind of surprised me.
I also had one long highway drive, a section of the drive home from the Adk, where I got 55. That's my best highway (interstate) mileage I've gotten. Been getting around 45 highway.
I think the warm weather does help.
I wish I could figure out how to measure cumulative mpg, but I'm not one for reading manuals.