Bob, my wife has a Highlander Hybrid 4WDi Limited. She gets around mid-20's but she has a relatively short drive to work going up and down some big hills. Most people who drive Prius's will tell you that they get pretty good mileage in the city. Since the HiHy uses the same technology, but scaled way up, I would expect City Only driving to yield pretty good results. The problem (when I drive it) is that the power is soooo tempting to use, and then that shoots hell out of your mileage. If you can resist temptation, you oughta do fine!

You should look at the database (User Cars) from the home page and then perhaps contact some of the members who are logging their overall mileage with their HiHys.

Good luck!

Don