They could track the mileage on the car and charge a per mile rate but it does come at a loss of privacy. Mandating that can be an issue. How much you travel every year is definitely information a lot of people would love to sell and buy.
On that same note though, some insurers (mine) offer a discount for lower yearly mileage but to get it, you need to offer up your mileage, but it is optional.
They could track the mileage on the car and charge a per mile rate but it does come at a loss of privacy. Mandating that can be an issue. How much you travel every year is definitely information a lot of people would love to sell and buy.
On that same note though, some insurers (mine) offer a discount for lower yearly mileage but to get it, you need to offer up your mileage, but it is optional.