Cruise Control problems of the 2018 Honda Odyssey

I was driving the car at 40 miles per hour on a back road without cruise control engaged. The road was one lane each direction, fully marked with lines, and gentle rolling hills. In a about � mile long straight stretch I came upon a cyclist using the center of my lane and climbing one of the hills. I coasted a little bit slower and then moved fully into the oncoming lane to give the cyclist plenty of room. At this same time a car popped over the furthest visible hill a little less than � mile away. At this moment the car stopped taking accelerator input. I was going up a hill next to a cyclist and losing speed rapidly. What should have been a pass with maybe 4 seconds to spare ended up being less than 2 seconds and a little frightening. I pulled in front of the cyclist much closer than I would have liked. Once I was back in the lane the car gave me control of the accelerator again. During the incident the were no warnings audible, visible, or haptic provided by the car. The only thing that was unusual was the engine going to idle and the accelerator not responding.

If acc (adaptive cruise control) is engaged (as well lkas -- I have not tested with acc alone) and the car goes down a hill (even with moderate slope), the brakes don't applied properly, and the car speed keeps on increasing violating the cruise control setting. At some point during the violation, the car even accelerates with the engine engaging in high rpm; I. E. , 100% opposite to supposed braking. For instance, let's say cruise control is at 45mph. The car keeps on increasing downhill till say 51mph, and then suddenly the engine goes to high rpm further accelerating the car dramatically!.