Seeing alot more bikes and scooters on the road.
I'll assume fatalities will skyrocket, particularly on scooters which require no endorsement or training AFAIK.
So, idjits will get out there and drive them like they drive their cars, which they aren't, and bad things will happen to them, which they do.
It seems every single day there are more two-wheeled vehicles on the road. I see it as both good and bad. Good because the more of them there are the more drivers are forced to watch out for them. Bad because obviously not every new bike on the road represents someone who actually knows how to operate one.
Utah recently changed its licensing requirements for motorcycles/mopeds/scooters. It used to be that there was one motorcycle endorsement. If you were legal to ride a 90cc scooter you were legal to ride a 2.3 liter Triumph Rocket III (which I really want to go test ride). No motorcycle endorsement was required to operate anything 50cc or smaller. So you could go take your endorsement test on a scooter and be perfectly legal to ride a 'Busa or a Big-Twin. There are obvious problems with this.
As of sometime in July there are now three tiers of endorsements, <249cc, <649cc, and >650cc, and they are related to what size bike you test on. Still not perfect, but better. There is no legal requirement for any sort of formal education/training. If you can pass the (very easy) test, you can get the endorsement.
As a side note, Laura is taking her MSF course this weekend. They'll test her on a 250cc which will be good enough to ride her 500cc shadow. In response to Utah's new licensing requirements the MSF is now providing a couple of 650s and will allow you to take the course on your own bike providing it meets a couple of requirements (which I have no idea what they are).
