Cosmo,
I disagree.
The process of consuming can be fast or slow. A Cessna can consume a ton of fuel, as can a jumbo. Either way a ton has been consumed.
The Rate of consumption is different between the two.
We are just arguing semantics, but there is nothing in the verb "To comsume" that imlplies a rate.
Does the sentance "To travel two hundred miles" imply how fast it happens?