Maureen, I'm incredibly inspired by your situation and would love to learn more about cycling options for your son. I'm brand new to the concept of a bike like this, this but would love to help research and see a bike made for your son. I would love to help in any way I can. I just looked up FES bikes online after seeing your post, and want to make sure I know what they are. Is this similar to the FES biike your son uses? http://www.restorative-therapies.com/rt300leg
I live in Cleveland and absolutely love to ride my bike too and feel that everyone should be able to ride a bike. I'm wondering if there is a way to modify a recumbent bike.