Speed Camera of cars flying by

I live on a quiet street, with occasional vehicles that are driving way faster than the speed limit. I would love to be able to leverage my Ring Security Camera to be able to calculate the speed of vehicles driving by in the road in front of my house. I know I could do this with a Raspberry PI and OpenCV, but it would be great to be able to get this into the Ring feature set. I am glad to contribute to the repo if you guys are thinking about enabling this capability.

Second this, would love to be able to do this and be able to download a csv of car speeds to turn into the police.

Do you really think one of the current models of Ring cameras would have the same or more processing power as your Pi? My guess it doesn’t.
So, I’d be curious, what would you be willing to pay for a new camera with those features? £300, £400, £500, £???