Man that fuel bottle cap positioned over the muffler gives me the willies. Things vibrate on long rides, and a trickle of gasoline on that muffler would make fire works beyond any desires. I can't see what holds the bottle on but I'd want it one: secure, and two: cushioned so aluminum does not wear against other metal with vibration. I realize you are also illustrating the tool tube and the gas can would be better off there, but I've seen too many of those tool tubes secured with nylon wire ties and they just don't last to my satisfaction. Gas is scary stuff and all possible cautions should be considered.