Kind of surprising this stuff still is little more than a concept. 12 years after google launched and scrapped it's glasses there are still no well established alternatives for cycling, which is such an obvious market. Everyone is wearing glasses, everyone has a computer mounted to their handlebar, let's integrate them together already.
It might make more sense to put this in the glasses than attached to the helmet, which is ultimately a consumable. But I basically agree with sibling comment that no one really wants this. (I race bikes and know a lot of other racers.)
Well the helmet is also a consumable (you should swap them every few years and of course after every crash). But having the visor integrated in the visor is awkward.
There are HUD glasses for triathletes, and have been for years. That's why the ANT+ "extended display" profile exists. These HUD glasses have been on the market for at least 15 years. UCI rules prohibit them, which is why they are marketed to triathletes.
With UCI ruling on bike computer sizes in the name of reducing rider distractions, I bet that HUD glasses would be outlawed with post hast if they became a thing in the pro peloton.
That's a solution in search of a problem that does not exist. This would, at best, be useful for someone doing a time trial. I don't see road racers using it in any other context.
