I'll quote this to the judge at my ticket hearing in a couple of weeks -- 80 mph: "Yor Hono(u)r, but this is what this has been design for, dammit!". If it works and he lets me off the hook (not to mention the $200 ticket), I'll even agree with the "low-cost option" part.
mishka > Highway System (designed for an average road speed > of 80Mph) travel by road for long distances has been > a reasonable low-cost option in the USA.