My comment is...I did Prudhoe Bay on a '07 ADV. It's only 255 miles from ColdFoot to the Bay. The Adventure has plenty of fuel to make it there when filled up at the Coldfoot rest area/truckstop (open 24 hrs). A regular GS has a good average range of about 200 miles (I once had an '05 1200GS), so you only need to bring a 3 gallon can of extra gas to make it safely. The GS an GSAdv has a good 40+mpg's average. I've seen many many dangerous setups here on ADV Rider and other sites for carrying X-tra Fuel, so it's up to each individual on how they want to do it.