Our New Toy!

Thanks to my mom's neighbors who were cleaning out their garage, we are the proud owners of a bike trailer. We searched for one on craigslist all last summer, but we were always too late. We are sharing custody of the trailer with my mom until the summer, and then we will take it to our house. I guess this means I *must* buy a bike. Any recommendations?She really does love it...this was at the end of her first ride. What evidence do you have that Caroline contributed to dressing herself on this day?