Doesn't change the requirements here in Illinois. 25MPH or 80MPH, it's all the same here.
Not here, stock e-bikes are the same as bicycles. Mind you most are bicycles with a motor, battery and pedal assist or full assist but they are capped at 20/25mph and look like this
The 80mph Sur-ron X bikes above are half dirt bike, but they fall under the same rules, just don't try to ride it 50mph down the town walking / bike path lol
Well, it looks like some are exempt after all. New laws in 2018. But not all and it is actually a bit complicated. Typical Illinois.