Source google image: http://www.hollandbikes.com/media/Le%20Mag/Transport%20enfant%20%C3%A0%20v%C3%A9lo/Transporter%20ses%20enfants%20%C3%A0%20v%C3%A9lo%20-%20le%20biporteur.gif
Velo enfant electrique
Source google image: http://www.hollandbikes.com/media/Le%20Mag/Transport%20enfant%20%C3%A0%20v%C3%A9lo/Transporter%20ses%20enfants%20%C3%A0%20v%C3%A9lo%20-%20le%20biporteur.gif