the 58mph quote, im sure nowadays that is not a good speed, with the leaps in technology.and im sure its not for every single car, for eg a nissan micra and a bmw 7 series, if they both run at 58mph that is meant to be the best speed?
test need to be done, so if anyones got a 7 series bmw, (in good nick) let me have it for... say 6 months and ill run it on the motorways (i do a lot of motorway driving anyway) at various speeds and then one of you guys can have the micra and do likewise and we shall see what the best mpg is on both cars.
actually could i have it for a year?