I wonder if other drivers will be using this app to report people they encounter while driving? How do you even account for that while calculating speeds? More

I wonder if other drivers will be using this app to report people they encounter while driving? How do you even account for that while calculating speeds? More importantly, how many accidents will this cause? This idea sounds like some half-baked high school physics mixed with OpenCV, and yet they are talking about pioneers hassling the cops with iffy reports using it already. I'm lost. Would any of this be admissible in court?