Metered Car Insurance.
One of the frustrating things about car ownership is that it's a sunk cost, all you can eat model. Like buffets, it encourages over-gorging of whatever. In Washington State, there is a "Pay as you Drive" insurance pilot being initiated. Using a GPS system it tracks your mileage.
Apparently, Progressive Insurance (in this case an actually apt name, I had to deal with a settlement case with them so I should disclose any interest in how I perceive them) is trying such a system in Michigan and Oregon. A link is available in the comments.