Odds are if you use a computer in your patrol car, it's a Panasonic Toughbook. The Toughbook is by far the most popular mobile law enforcement computer. The Toughbook 30F notebook (pictured) and the 19F convertible tablet PC both have displays that are twice as bright as most rugged notebook displays. Yet, it delivers more than six hours of battery life. The 30F notebook features a 1.66-GHz Intel Core Duo Processor with a 2MB L2 cache, 512MB of RAM, and a 60- or 80GB hard drive. The CF-19 convertible tablet PC is powered by a 1.06-GHz Intel Core 2 Duo processor with a 2MB L2 cache, 1GB SDRAM that's expandable to 4GB, and an 80GB hard drive.