I actually felt like laughing, it reminds me of a man having his midlife crisis, it's both amusing and a great read.
I like how you used a car to describe somewhat of the past relationships the narrator has seemed to experienced. The rhyming scheme is wonderful you seem fond of a meter (from what I have read, and have yet to comment on.) I admire those who can make a poem that rhymes some what and not have it become repetitive.
The last stanza I have to admit, is my favorite, and no, not because it ended. All in all this is a very well written poetic piece.