Opponents call them "motorheads" and complain about noise and fumes. But the sport of off-roading is exploding in Minnesota, with thousands of new all-terrain vehicle users hitting the state's trails each year. Along with motorbikes and four-wheel trucks. These high-powered machines come under the heading of "off highway vehicles... or OHV's," and their use is largely unregulated in the state. The Department of Natural Resources is working on giving OHV users their own places to ride. Tonight the first planning meeting for the state's second OHV recreation area will be held in the town of Virginia, even as some people living near the state's first OHV park continue to protest they don't want it.