At the end of the first week, I am very pleased with our Lexus RX400H hybrid. As I told Sharon, if it had not been for her, I would probably have gone for the Highlander Hybrid (just because it was bigger!).
The vehicle is rated at 24 mpg on the highway and 26 in the city. I got 25.5 miles per gallon on the first tank (349 miles and 13.67 gallons). For comparison, between December 16, 2007 and June 26, 2008, I drove the Explorer 10,251 miles and got 16.33 miles per gallon. At $4.469 a gallon, I saved $34.81 on gas in the first week.