I just wanted to quote this because it's been a long time since I've heard this.
My Dad has an '05 or '06 Altima and it's been a great car for him. I never noticed them before he got his and now I see them everywhere. He had had a company car for 25 years and bought this when he changed jobs. He wanted simple and reliable. I'd say that 95% of the ones I see are the 4 cylinder 2.5 liter and he can get 35 mpg with his without even trying. He does a lot of freeway driving down the valley and it's a comfortable car with a lot of space (interior and trunk).