We have a Chariot which is fantastic. It converts so you can use it as a stroller or jogger pram plus behind the bike. You can also buy conversion kits so you can take it cross country skiing. When we first got to the USA we only had one car so I use to take my youngest who was not in school everywhere in it in all sorts of weather. He stayed dry and warm. I just wish I could have a ride in one they look so comfy.

http://www.chariotcarriers.com/html_...ailers_txt.htm