In the spirit of conscious spending I took my gf out to an amazing out of town restaurant for her birthday (tied for best restaurant experience of my life, definitely worth it), but of course I don't have a car.
We didn't want to rent a car (not Mustachian) so we borrowed one from a friend and paid him with a bit of gas and leftover cake.
It wasn't a long drive (45 minutes each way) - but hitting the highway, dealing with the stress of finding a place, traffic, made me happy that I either metro, walk, bike to work each day. Also reinforced the need to NOT own a car.. (for myself, I realize for other people having a car is a necessary choice).. and that if I really need one for a special occasion I can barter, borrow.. or even rent if it came to that.