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Comment rearrange the roads (Score 1) 228

Roads could be better laid out to separate nose-to-tail convoys of self-driving trucks from other road users. It always seems to snarl up the whole highway when one truck takes 10 minutes to overtake another. If they could all move along with shared engine capacity that could probably be eliminated.

If they moved the lane barriers around they might create a single central lane that is used for self-driving trucks, have each section run one way for some period and reverse it for the next period. Have the sections end at convenient marshaling points for interconnection to other transport / big cities, intersecting highways etc. or to drop in drivers for local deliveries.

Leave the rest of the road for human drivers

Comment Re:'Hidden city' explanation (Score 3, Insightful) 126

or if you set the timer to go off on the leg from ORD to LAX but get off at ORD and don;t mention the baggage. If I were the airline, I'd be using the necessity to resolve that conundrum as the basis for my complaint, not some rubbish about not being able to sell the same seat twice.

Comment Re:I wish it had been dismissed on the merits (Score 3, Informative) 126

I've never understood why they won't transfer me to an otherwise empty seat on an earlier flight when I happen to be early for a connection. It would seem to be in their best interest to fill up the planes and push the "empty seat" to a later flight when they have a chance of selling it, but they never do offer me a free change, they always want to charge me an extra $50, so I just get a soda and wait it out.

Comment Re:in terms of energy ? (Score 1) 678

Apparently I shoudl ahve used google !

In theory, calculation shows that 1 kWh is enough to produce one ton of fresh water from seawater. However this assumes a perfect thermodynamic and mechanical system which is not possible to build. In practical terms a desalination system will require 7 to 18 kWh/m3 depending on the corresponding investment.

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