It's been cold here lately and the suction cups for the V1 aren't holding at all. The first time it fell, I was driving down the interstate, so I didn't even worry about attempting getting it back on thw windshield. I brought the suction cups in and cleaned them when I got home, then soaked them in warm water for a bit, which seemed to help for a while. After I got on the road, I'll be damned if it doesn't fall again, but I did manage to catch it before it hit the dash this time. It was a rough day for the V1, unfortunately.