Polaris 6x6 quad with and without tracks. J M M at Val d'Isère on 1989-08-14
ATV Snipe, 6x6 with suspensions. 1 t, 80 km/h, 85 hp, payload 1.5 t built by Kopytov Alexander. First prototype was built in 1998. http://www.vezdehod6x6.ru/index.html
Secma Quad, about 2006 from Secma, Aniche, France
LUAZ 1901 prototype, 6x6, 1983. http://denisovets.narod.ru/luaz/luazpages/luaz1901.html
Secma Fire Quad. Utility ATV firefighter version. J M M at Mondial de l'automobile 2006 in Paris.
LuAZ-1901 6x6 amphibious prototype called 'Geologist' manufactured at Lutz and unveiled in 1999 at Kiev Show. http://auta5p.eu/lang/en/katalog/auto.php?idf=LuAZ-1901-Geolog-8665
Seliger, ATV Society at Tver region, Russia, is a 6x6 amphibious vehicle built upon request. It looks like Argo. Speed 90 km/h, 15 km/h on water with propeller, 4 passengers, total mass 950 kg. www.vezdekhod.ru