[QUOTE="Eiron"] TimP wrote: [QUOTE] 11-dimensional M theory? Of which Saab only use 9 for their car boot measurements? :) What the fuck are you talking about?[/QUOTE] A litre of [1mm thick card] is 100x100 [cm] ? A litre in a bottle is a cylindrical litre, in a balloon it is a spherical litre, in a funnel it is a conical litre and in a box it is a cubic litre.[/QUOTE] Oh for fuck's sake, are you really that thick? WavyDavy's 10x10x10 is essentially the definition of a litre, being 10^3. WC replied with a 2-dimensional description (notice you had to insert the 3rd dimension?) which is clearly meaningless in this context. From your "explanation", I suspect it would have to be a cuboid litre anyway, but I doubt that saab measure their boot space by the number of litre-cube boxes you can fit in it. Perhaps the fact I suggested M theory as a way of providing the extra dimensions for Saab's cubic litres might imply that I understand enough physics to grasp the concept of volumes?