Get rid of the mirrors and sign up.

And more distractions on the road probably too.
Would be good if it is just rear view!

Skully Helmets have this built in:

Wow, super cool. I'm sure you could link your radar detector into it since some of them are smartphone compatible now. Looks like it sits on the outside of the helmet? That may not actually be legal here in Washington because of an obscure helmet law. I know GoPros are not legal if the cop wants to be a hardass.