A litre is exactly the size of a carton of milk over here, so that is a very common amount that you use every day. A cubic metre or if you really wish a kilolit

A litre is exactly the size of a carton of milk over here, so that is a very common amount that you use every day. A cubic metre or if you really wish a kilolitre (kl, not the Americanism kL) is an easy to imagine amount since we work with metres every day as well. Cars differ widely in size, and I have barely any idea about their weight.