A '73 Plymouth Duster that I still have 13 years later. The car was a three speed (on the tree, of course) and when i showed up at the test site I was especially anxious to demonstrate the fact that I had (or so i thought) mastered the art of heel and toe downshifting after countless hours of practice at matching revs. I took the test and thought I had done really well and was feeling pretty full of myself for not grinding the gears while using the trans to slow down instead of the brakes. Then the examiner handed my the evaluation form, right at the top was the box for 'poor use of gears-manual' with a big red check mark next to it. Oops! Thankfully that was my only deduction so I still passed but I still keep that form around as a reminder that I'm not half as good a driver as I sometimes think I am.