cdrake 
2008 Toyota Sienna Minivan Limited 7-Passenger 4dr Minivan AWD (3.5L 6cyl 5A)
Avoid all wheel drive
 Avoid all wheel drive;  here's why; the run flat tires.  These tires will only last you about 10-20k miles.  They are very costly (2 replaced last week cost me 600).  They also are not easily replaced by tire dealerships.  So, let's say you are on a vacation, the light comes on, you have 50 miles to drive before the tire shreds, and no available place to fix the tire within 100 miles. Get the picture?  The AWD additional mechanisms take up the room in which the spare tire would be located, so run flats were the solution.  This van also averages only 17 miles per gallon. In summary, well built, poor gas mileage, and costly, hard to replace, and quick to wear out, tires, even with 3k rotations.