Thanks for the point Arunas. I must admit that I have never heard of the Aico 15 name (though I guess this might be the Swiss market name), but this car is also normally known as the Little RS, as you will see on many websites and in the Techinical Studio's brochure.
For the first few hours of the initial Press Day at the 2008 Paris Auto Show where this car was revealed, is had a 'Seven' licence plate mounted at the back, but by lunchtime it had disappeared and become Extrem, only to then be changed again to RS!
I visited the Technical Studio 'factory' last year to see the Little 4 being built. I will add some photos to the site when I can find them.