1 - bikes are already great, really cheap, and actually good for you to cycle. We also have an obesity problem in most western countries.
2 - they let inexperienced riders go really fast on bikes that are 3 x heavier. You see so many idiots cycling though red lights at 15mph weaving in and out of pedestrians. If you want to go that speed on a regular bike you have to earn that speed by cycling for many years
1 - bikes are already great, really cheap, and actually good for you to cycle. We also have an obesity problem in most western countries.
2 - they let inexperienced riders go really fast on bikes that are 3 x heavier. You see so many idiots cycling though red lights at 15mph weaving in and out of pedestrians. If you want to go that speed on a regular bike you have to earn that speed by cycling for many years