I had one of these through Progressive, they called in Snapshot. My insurance premium was cut 30% and it was amazing. Or at least it was until I tried applying at the Post Office years later. At the time, my car was registered in Florida where I lived, but I parked my car while I was over the road at my parents house in South Carolina. Progressive calls me up about a month or 2 after I have the Snapshot plugged in, asking why my car was always parked in SC. I explained that I was a truck driver and that’s where I parked it while at work. They told me that since my car was in SC for the majority of the year, it needed to be insured in SC. Sweet, my premium dropped even lower. Then a month later I get home to Florida and I see there’s a letter from the DMV in Florida demanding I reinsure my Florida-registered vehicle back to Florida, or they were cancelling my license. The deadline for that was 3 days before I got home. Oops. A few phone calls and a $100 or so fine later, everything was fixed. But for the next 5 years, that cancellation, not suspension, of my license would come up every time I applied at USPS because that’s how far back they checked your driving record. What a pain in the ass.