I did it twice. first time I drove from Montreal to Vancouver by Canada no1 road last year later september.5700km. 6 days .with my wife and my son .I drive a manule BMW320I. very gas saving car.
then I drove my 1995 bmw320i from Vancouver to Montreal passing 13 The USA states. almost 6000km. same car .1995 BMW320I manual .very good in gas and very powerfull. one tank I can drive 5 hous no stop. with 130km /hour .this time with my daughter during her spring break.