On rides like this, that's what it's for, spare gas in case somebody miscalculated. I even carry a specially made transfer hose that hooks into a quick connect behind the side panel to pump gas from that tank to another container. No worries. A few years ago when I did the Sorebuttapolooza ride, I thought it'd be aggravating to stop every 100 miles, as the route was planned. The truth is, it was refreshing and a relaxing change. I'm completely good with any kind of trip, so long as I'm on two (or three ) wheels and out of NW Ohio.