Something that only works for one gender, and only for urinating is not solving the problem of public toilets.
The second ones are not permanent toilets, on that same spot we do have permanent ones now that stay in the ground for most of the day and come out at night (in a nightlife area):
http://f00.inventorspot.com/images/urilift-public-pop-up-toi...
http://www.street-art.nl/wp-content/uploads/2012/07/1-1.jpg
and
https://pinkylightsaber.files.wordpress.com/2011/12/public-t...
while useful, they usually are quite smelly though.