but bills targeting (or benefiting) specific people/companies/tech/etc. are generally considered illegal no?
The issue here, as always, is training people to use new technology properly. We simply don't. We expect everyone to implicitly know when they shouldn't do something. As evidenced by the texting and driving, people aren't making proper choices. It is perfectly reasonable to text while stopped at a light, not so much while moving. (and yes arguments can be made about any situation).
Since texting is frequently compared to drunk driving - here's a good example - It's perfectly LEGAL to drive with alcohol in your system. It's just 'how much' that's the issue.
Training to get a license certified to use a technology 'like' Google Glass is the answer. Cops will be using it eventually and they will most certainly be trained on how it interacts with their driving (just as they are for the laptops, radios, etc that they have going in the vehicle while driving today).