I test rode a Specialized Turbo today. Loved it! It only has PAS not a throttle. It has a 250 watt direct drive hub. 36 volt. I was really surprised at how much boost the little motor provided. It is a hybrid bike so the riding position is not very low. Even so it was not much work to get the bike up to 28 MPH and hold it there. I was really impressed. If it weren’t for the $5,900 price tag I would love to buy one.