We are all different Bull , I am not saying I haven't been guilty of exceeding speed limits or load limits my driving record is proof of that ,but mostly it was a calculated risk not a habitual thing, it just get joy out of tagging along as tail end Charlie and setting my own pace and enjoying the ride, back to the fuel consumption subject, I can say with some confidence that the faster you drive or ride above 100kph your fuel is consumed at ever increasing rates also your fatigue factor increases , at 67 years of age I can still comfortably ride 1200klm days in 14 or 15 hours on the interstate Highways, the fuel consumption is not my reason for a more leisurely pace its just less tiring for me nowadays