Wow, that’s a lengthy review to say that the range is on a par with the Varia and the seatpost mount is poor!

One thing I like with the Varia is the red alert warning tone when a vehicle approaches at high speed. The CarBack doesn’t appear to have that feature. On my local roads (narrow, fast, no shoulder) it quickly tells me if an approaching vehicle is slowing down, which is a good sign that they have spotted me.