Wish you could get rid of that gas-guzzling eyesore? It's expensive, smelly inside and out, and nearly impossible to park. Join City CarShare, sell your hunk of junk, and you're likely to save money — and definitely lower your blood pressure. The math may seem complicated at first: Add up the yearly expenses on your car, estimate the number of times per month you go various places, yadda yadda yadda. But the numbers don't lie — zero insurance, zero repairs, and zero parking headaches (City CarShare vehicles have their own spaces around town). These spiffy little rides are always in good working order, clean, and new (take a hybrid, if you like, or pay a bit more for a convertible Mini Cooper). Why is City CarShare so much better than other businesses offering similar services? It's a nonprofit, not a get-rich-quick scheme, and is likely to outlast all those copycat outfits we've seen cropping up lately.