Don't leave home without it (anymore)
I have only used this Garmin radar on a couple of rides for a total of 100 miles in a mix of city, suburban, and rural roads. The device is super accurate (even when I doubted it because I could not see the car behind me (too far).
The app works fine but is kind of a "nothing" app. It just does one thing...display the bike and cars coming behind. But it would be great (and my suggestion for one major improvement) would be to integrate the radar display functions into Strava app for phone so I can see other information alongside the cars coming up.
Having said that, now that I have tried it, I will not ride without it.
Naveed B.