Alice Walton

Rank on Forbes.com 2006 World’s Billionaires List: 20
Net Worth: $15.7 billion
Vehicles Owned: 2006 Ford F-150 King Ranch
Source: Texas Department of Transportation

A rough-and-tumble woman who isn’t afraid of rolling up her sleeves and breaking a nail, Alice Walton lives in Texas on her ranch. The Wal-Mart heiress' history with vehicles is bumpy. According to the Springdale, Ark., police department, on April 4, 1989, Alice Walton struck a 50-year-old woman who walked into the path of her 1987 Porsche. No citations were issued to Walton, though the woman later died from her injuries. Also, about nine years later in Springdale, Walton was cited and later fined $925 for driving while intoxicated after she lost control of her 1997 Toyota 4-Runner and slammed it into a gas meter. Walton now has a 2006 Ford F-150 King Ranch, which provides her with an ideal blend of luxury and towing capacity.