Speed of Ariel Rider is definitely solid, I get up to 34mph regularly, and its zippy enough that I can keep up with cars on side streets and in traffic. Generally speaking, if there's heavy traffic, I get to where I want to be way faster than in a car, as I can split lanes and jump on the sidewalk whenever I want. I changed my crank to a larger one and on pedal assist I can reach 38 mph on my X-Class.