I am in Arizona and my in-laws just bought a toyota Sienna. Pretty nice ride, gives about 23-24 mpg on the highway. And as a HOV not bad. With 4 people in the car we get to go on to the Diamond lane. Drawbacks: to many little storage areas.
Pros: You can fit an elephant into it.
Will take it for a test drive later. Need to check out this baby wagon compares to the Honda Odyssey that Mark has.