Speed and RPM's will drop when high gear can no longer maintain. You will instinctively drop a gear which releases cruise. You won't resume until high can pick it up again. It will seem very natural after about 50 miles on the highway. This transmission may behave a bit different if shifts are electric, and selected in a different way?Glad someone asked about this, I was thinking of asking. So how does it work? You are cruising along at 70 mph on a standard transmission with cruise control on, you go up a hill, RPMs go down and the speed can't be sustained. Does the cruise control just release automatically, and do you get an indicator light on the dash? does it become 2nd nature to notice the hill, and downshift when you hear/feel the RPMs going down?