Hi and

to diABILITIES!
If you click on where it says "disABILTIES" at the top of this page it will take you to the Index. One of the top items is the "disABILTIES FAQ" which will gives lots of useful information. Post #2 discusses mobility and lists several rental companies that have been used by members of this Forum for rentals without (major) problems. Note these are not paid advertisements.
Or, if you want an easier route, click on the link in my signature.