Originally Posted by WhyFi

The only problem with the Varia is the anxiety of not having it (forgot to charge it or whatever) after you've grown accustomed to it.

Also, if you haven't seen, you can pair it to as many head units as you'd like - there's no pairing mode, it's always open broadcasting - so both you and AG can have the readout. The person that's piggybacking just has to be aware that the indicated car positioning is relative to the light, obv, not their own position (but you two stick close together, anyway, it seems).