Theres a Shell optimax Extreme !,available abroad,thats 100.5 octane !,its apparntley got ethanol in it,as yet,shell have no plans to bring it here !
its widely available in Australia etc !
http://www.shell.com/home/Framework?siteId=au-en&FC2=/au-en/html/iwgen/shell_for_motorists/fuels/zzz_lhn.html&FC3=/au-en/tailored/shell_for_motorists/fuels/extreme/about_extreme.html [Edited on 20-11-2005 by Simon Reed]