S.
H.,
I just bought a double bike trailer and I love it. It does not convert to a stroller. Although I think it would save some space in my garage, I don't mind that it does not convert. I think it would be somewhat of a hassle to deal with converting it back and forth all the time. When my kids are ready to go for a ride, they are ready NOW. So, I think having to mess with converting it back and forth might be a pain. Good luck finding a nice used trailer!