"I would not say weight is irrelevant, but most people (except professionals or racers) could save weight by losing weight - and save a lot of money. that said I would not see this add-on as a weight issue, as people that will use this are likely not interested in weight. The front wheel weight would definitely affect handling, but I can't see someone with a throttle zipping through traffic - you would hit a car. one other issue I would be interested in is wheel warping. With no spokes, can it be trued, or do you need to buy a new wheel? There are no doubt trade-offs, but overall I think this is nice design."

"I think you are giving impatient drivers too much of a pass. If I had a dollar for every time a driver swerved around me, risking my life, to get to the next light faster and watch me ride past them to front of the line and them have them do the exact same thing when the light goes green, I'd be rich.Drivers in the city need to look up and see the red light, not see red when they see a cyclist. If those people left themselves a little more time to get where they are going, everyone from cars to cyclists would be safer."