I have been bike commuting for over a year now and have all but abandoned my poor VW in the driveway. It hasn't been driven in months and last time I tried to start it I couldn't.
My wife on the other hand is still doing a lot of driving. We have 3 young small children and transporting them all by bicycle is a challenge even for me. I'm currently using a bike+trailer-cycle+trailer for kid hauling duties and I think it all adds up to about 300lbs.
She is not a very strong rider (yet) and I don't think she would be able to do it for any practical distance. I was thinking of using an electric assisted bike and a free radical. Has anyone carried 3 kids with an xtracycle? How do they fit? How is the handling? What other problems might I run into with this set up?