Indeed, very interesting stuff. I particularly like the very top car, the Justicialista.

The Swiscyclo reminds me of a British kit car the Pembleton Brooklands: http://img.webme.com/pic/d/ds-ev/pembleton01.jpg which also came with a Citroen motor (though not in my link which looks like a bike motor), though I'd imagine any connection between the two is purely coincidental.

Bit of discussion about the Argentinian Lotus Seven here: http://www.imcdb.org/vehicle_371074-Lotus-Seven-Mark-7.html