There is nothing so strange that it hasn't been tried and/or adopted by someone. The men have inflatable dolls, the women have these 'interesting' machines. What is sad is when the gadget becomes the focus.

(disclaimer: I worked in an 'adult' bookstore for a couple of years, I have SOLD inflatable dolls...maybe 3 in 2 years, and I think 2 of them were for practical jokes. At that time (27 years ago) they didn't have the realistic silicone ladies...and we didn't have customers who could afford £4000!)