On the other foot, the Adventure can deal with just about anything short of glare ice or quicksand if you can. And while it's more workmanlike than uninspiring, the big Boxer pulls convincingly from idle to 7000 rpm. Slightly shorter overall gearing makes the engine spin a bit faster-nice on a muddy logging road but mildly annoying after 12 hours on I-5. Thankfully, the rest of the GS cabin is first-class. The firm, nicely shaped seat is all-day comfortable, and that adjustable windscreen punches a mercifully calm hole in the oncoming atmosphere, even in the rain. With BMW's phenomenal GPS III navigation system (see sidebar, page 59) and a fuel tank capable of putting an honest 400 miles between fill-ups, getting lost is impossible, running out of fuel is highly improbable and the crooked dotted lines on the map that go nowhere in particular are irresistible.