BMW's brochure copy is 99% right. Neither rain nor sleet nor snow, rocks, ruts, mud or a deranged hillbilly/rancher could stop the 2010 R1200GS at its North American press debut this week. Only the California Highway Patrol brought us to a standstill. When the CHP says the road is closed, it's closed: 3.9 miles short of dry clothes and a warm fire at the Tenaya Lodge. Carve a shivering u-turn in the snow, and backtrack 10 miles to Oakhurst. Recognizing that we were on the 2010 edition, one patron of the miraculously warm/dry El Cid Mexican eatery - worth a stop next time you're in Oakhurst - figured the guy shivering in soaking gear might know something about that muddy, snow-caked GS parked outside. "Good bike?" Very. Otherwise, I'd be in some Mariposa County emergency room after a 255-miles on and off these roads in this weather.