Fair point. Refrigeration is not needed. It just helps because it stores extra energy if you have it. Some divers refill their tanks in a water bath to keep it cool for the same reason - it gets more air in for a given pressure. :| Exactly. There are many ways of cooling without refrigeration. Chea...

But seriously, I thought I killed this on the old bored. The energy efficiency is pants. Why use electricity to compress air when you can feed it directly into the battery? And what happens when you try to compress air? It heats up! So you also need a big refrigerator to counteract that. And lots o...

On the subject of which, what happens to that in an accident? Imagine that would be potentially quite destructive, and difficult to protect without a disastrous weight penalty... just surmising here. Are you suggesting that the explosive threat to passengers of an impact to a container designed to ...