I have seen a few questions on this site and a few more answers which are about Velomobiles.
Several of them show that the asker or answerer has clearly no experience whatsoever with velomobiles and while I would like to tell them to rent one for a day, I am not sure it is even possible in most of the world.
I know that with the bigger sellers of velomobiles in the Netherlands you can arrange to get a test ride which is longer than a normal one, say a whole day, for a small fee which will be returned if you buy from them, even though they do not usually publish the option on their websites.
Are there shops like that or other places to rent a velomobile 'anywhere in the world'? I will be happy with one location, lists not needed.