My wife does a 35 miles one-way commute twice per week (takes the train home). I rode up with her this AM part way for fun. We got passed on the street by an E-commuter doing about 25mph. He was gone and out of sight a minute later.

We are considering getting her one so that she can do the commute in a more reasonable time. Right now it takes her about 3 hrs and an e-bike could take a huge bite out of that time. She would do it more frequently if she had an e-bike.