Surf or turf -- Yamaha Motor Corp., USA is on a roll. The company, a subsidiary of Japan's Yamaha Motor, manufactures motorcycles, all-terrain vehicles (ATVs), race kart engines, golf carts, and snowmobiles, as well as race boats, personal watercraft, and two- and four-stroke outboard motors. Branded apparel and merchandise coupled with consumer financing support Yamaha Motor USA's marketing. Its lineup, which is targeted to recreational and sports enthusiasts, is promoted through sponsored rallies and races. However, a growing number of rescue and armed services, including police, firemen, and US Border Patrol, are using Yamaha's off-road vehicles to cross tough terrains. A network of dealers sells the line.