I used a similar service through Progressive nearly 2 decades ago. They sent you a dongle to plug into your OBD2 port and then measured how fast you accelerate

I used a similar service through Progressive nearly 2 decades ago. They sent you a dongle to plug into your OBD2 port and then measured how fast you accelerate / stop etc. It wasn't such a huge discount as to justify the surveillance I guess, but it was something.