Today i got Zack a car booster seat. It's called the Outward Hound Pet Lookout Car Booster Seat. I got it because he's not big enough to see out. Also, it keeps him safer, the company claims, because there's a strap with a clip on it that clips to the loop on the back of his harness (Four Paws http://www.pet-dog-cat-supply-store....166c5d3ea435c2) attaching him to the passenger seat of the car via the booster seat. This is the one i got, same color (black) http://www.petco.com/Shop/Product.as...amilyID=12262& . Here's a red one: http://store.yahoo.com/pet-guys/-700603006230.html
There is also one with an inflatable bottom which was not available at the store i went to (PetSmart), here it is: http://www.petsmart.com/global/produ...N=2032887&Ne=2
The one i got cost about $20.
I really like it, it works. It's for dogs up to 20 pounds. zack is 9 pounds He can curl up in it and sleep if he wants with room to spare, and he can lean toward the window and smell the breeze and look at all the people and dogs and other exciting things on the streets when we drive if he wants. Before i got this, he didn't enjoy driving. Now, on the ride home, he was enjoying it so much, i went for a little pleasure drive by the beach so he could be entertained.