disappointed 
2009 Nissan Altima Hybrid Sedan 4dr Sedan (2.5L 4cyl gas/electric hybrid CVT)
HORRIBLE NISSAN
 I just bought the car less than a week ago. I was too stupid, didn't realize the problem when I was test driving it. Whenever you try to slow down or hit the brake, it actually sounded like an ambulance or police car siren 800 feet away from you. The dealership was in a quite busy neighborhood, so I really thought there were police cars or ambulance around or down that street, not until, I bought the car, and drove home and drove in my nice neighbor realizing that sound is from stepping on the brake. I brought it back to the dealer, they can't do anything about it, and I am stuck with this brand new car with horrible sound. Don't ever buy a Nissan car.