How about a picture of the week, or something similar on the home page that would change every so often? There are so many cool pic's i've seen posted on the site it would be nice to see that every time I logged on.
And part two, how about a featured car of the month, i'm sure people would like to send in info and pic's of their rides, and I know I would enjoy reading in detail about other peoples cars.
Just two thoughts.