I have a Metromile,
https://www.metromile.com/technology/
I got it a few years ago and they sent me a OBDII device that has its own cellular data connection. It's free and I can see trips I've made, MPG, est. fuel cost, and when parked on the street I get street cleaning warnings.
I'm not sure if they still give it away for free, they try to sell per-mile insurance and that's how the company makes money.