Love that Helmet - a great idea! I would also like Sumi Das to fit mine!!!!:)))

Seriously this Helmet will sell - the price will come down - but many modern bikers love and must have the latest kit!
This Helmet is a life saver - as bikers we try to ride in "the bubble" a safety bubble that is all around us - this entails constant vigilance of all that is around us - 360degrees.This Helmet fixes the rear 180degrees in a significant danger zone.
Interestingly I tried a rear view Helmet at the Bike show a few years ago - this used mirrors and was a little cumbersome -I do not think it took off - maybe it was a prototype - I cannot recall exactly.
The battery should not be a problem - as most modern new bikes have a power take off - just like we have in the M3W.
This Helmet would certainly work in an M3W - if drivers felt it necessary.But any significant safety device is well worth serious consideration:))
look fwd to your feedback Jays - you lucky man!