Lena -- please accept my sincere condolences to you and your family.
A suggestion if I may: let this thread play out and then print it for your son and keep it in a safe place. It can serve as a small token of the impact his father had on a community.
Bikes are an amazing thing, and can transform people, physically and mentally. Your husband loved them, and knowing that love will help your son re-connect with him for years to come.