I still pay with cash for many purchases though try my best to use debit cards with caution for the same fear in this article.
I think there is a glut of used cars, and so many if given just a few minor repairs could do just a great job as the newer ones.
Another reason not to waste money and buy used and cheap. Being cheap can save the world as this is a good way to recycle metal if unable to take mass transit.
If someone figures out a way to convert those old cars to run on solar and wind, or steam like Jay Leno's car, ideal.