Just thinking, why aren't there any three seat bikes besides side cars and trikes?, i know weight and lenght and being hard to hold up at the lights because of extra weight might be obvious answers, but what about people with young families that would love to use the family bike instead of the family car?. I am sure manufacturers could design some kind of bike that would work well, at least with well trained pillions!. I guess the hard thing would be to design a bike that would be legal and comfortable with three, and still be nice to ride with one person. Any replies would be very interesting thanks!!