acdii Report post Posted April 4, 2013 Agreed. A sustained 65 MPH test that simulates Interstate travel is what most people assume is the Highway rating, when it is not. CR tests this way, and just about all car reviews do the same, so if one portion of the test is Interstate with gentle rolling hills that most of them have over a period of time would be most beneficial. 1 darrel.e.wise reacted to this Quote Share this post Link to post Share on other sites