http://bcoy1cpb.pacdat.net/bsa_in_action.htm
"The BSA airborne bicycle was used in battle, but probably not as originally planned.
The plan appears to have been that the bicycles would be mass produced and make the airborne soldiers mobile once they had landed. It was better and faster than walking."
I was just about to post a link to photos from that same site:
http://bcoy1cpb.pacdat.net/bsa_historic.htm