Carma Sutra: The auto-erotic handbook, by the husband and wife team of Alex Gaines and Esther Selsdon, is a book that’s racing to the top of the charts. And why wouldn’t it? This 80-page, adult fare, book is sub-titled “A manual of sex positions for in-car entertainment.” Illustrations show the many ways in which to be “entertained” and the authors provide some model-specific advice which might be worth a read before buying that new car. Keep a copy in the glove box next to the condoms. Married couples seeking some spice for their love life will find it here.