Really good app, graphically perfect.
Unfortunately, the distance accuracy is really inacurate, and so you can't trust this for that.
Contrary to the adage "Objects in mirror are closer than they appear", here the other cars look more distant than they really are, sadly so, as I wanted to make this my "go to" tool for online racing, along with CrewChief spotter.
The AC's in-game radar app is way, way more accurate and precise (not even comparable, IMO), but if you don't expect accuracy or precision, then this does the trick nicely.