Look in the upper left hand corner. You'll see the little grey band running across the screen. Directly underneath the "Home" and "Forums", you should see a button reading, "Add Garage Entry". Click it.
'67 Mustang - out of commission after an accident
'00 Echo - DD
'11 Kia Rio - Wife's DD
'09 Harley Nightster - 48mpg and 1/4 miles in the 12's