Hi Guys. I love to travel with my bike. Like a lot of us here. So I'm tired to use my cellphone to navigate, I want something better, I want a real GPS. Because I'm first of all a road eater, I want one good for road use. Those in my title looks great for ride without brain, let it chose roads, and just enjoy. But, because I'm also a guy who didn't like limits, I'm thinking about use it with my offroad bike too. Is it something possible? Are those GPS able to guide me in the dirt? And if the answer is "yes", do they do it out of the box or will I have to fight with them or with downloadable maps?