"Under the right climatic conditions, Fontus can easily produce half a liter of water in an hour's time."
We already know that it can produce half a liter per hour, but those same climatic conditions are when a cyclist needs significantly more than half a liter per hour.
I read that differently. On the one hand, there is the experimentally confirmed drop a minute. On the other hand, they do not state that that half liter has been confirmed experimentally.
I still doubt that number. Looking at http://atmosphericwatersolutions.com/wp-content/uploads/2012..., I see a machine that weighs 38 kg, consumes 373W of power, and produces 'up to 17 liters of water a day'. This thing would be an order of magnitude smaller, and produce almost the same quantity of water. Possible? Maybe. Likely? No. Because of that, I would like to see experimental confirmation of that half a liter per hour before accepting it as a given.
Also, see http://en.m.wikipedia.org/wiki/Atmospheric_water_generator which claims the U.S. army and FEMA use a system that needs a gallon of fuel for 'up to' five gallons of water. If something like this were known to be more efficient, I think it is likely they would use it.
"Under the right climatic conditions, Fontus can easily produce half a liter of water in an hour's time."
We already know that it can produce half a liter per hour, but those same climatic conditions are when a cyclist needs significantly more than half a liter per hour.