I have finally made it into the double-digits for speed. I've learned that the particular model recumbent that I have is several miles per hour slower than the top models of the same brand. Of course the top models cost 4 to 6 times as much! If I can work up to 100K with a couple thousand feet of climbing on my present recumbent I'll probably spring for one of the high-end models.
My 8 conventional bikes sit here unrideable. I know I could probably do 5mph faster for the same effort, but at least I am riding again!