I bought a 2008 model in late 2009 that had been on the lot for over a year. Two things that I should have caught but missed.
House Batteries: They died 3 months after I bought it. They had been sitting for 1.5 years and were 2+ years old when I bought.
Tires: They "flat-spotted" after sitting out un protected for that length of time. I thought I had a drivetrain vibration that I just could not get rid of. After an inner rear blow-out 1.5 years into ownership. I replaced all the tires and she ran very smooth after. It then hit me that it was the tires all along.
Some good suggestions up there, if you get a good deal on it, go for it and enjoy!