DD, Funny you mention side cars, My Dad had side cars on most of his bikes, Think the first one was an ex AA bike which was an Ex WD bike (Norton Big 4), when I was born the mode of transport was upgraded to to the Reliant Regal....... then later the Robin.....
It was only recently that my Brother was talking about a side car he remembers that Dad had stored in a wardrobe upstairs........ I can only guess Mum stored stuff in the "Chair" that sat in the wardrobe, My wife puts up with a lot, but I think a side car propped up in the wardrobe could take her over the edge........ strange women.