Callie has something similar, she LOVES it (now)! At first she kept trying to jump out the side and climb up on my shoulder while I was driving, but now she sits in the seat like a big girl
I put her harness on her and hook her in to the seat and she just chills and watches the road, too cute! Less stressful driving with her this way, and not in her carrier (she would whine the whole time).
This is what we have (from PetSmart):
Outward Hound™ Deluxe Car Booster Seat