The most efficient transport will be hyperloop, vehicles in vacuum tubes, and the few required energy it's produced by solar panels. Not sure if it can have a good use for cities, since it will be very expensive.
For flying maybe in future people will need to have solar panels and get credits of produced energy to be allow to fly in electric vehicles. A week or so to produce energy to a short flying trip.
Personal dirigibles could be a alternative, but heliun it's going to shortage soon, and hydrogen it's dangerous.
But even if energy wasn't a problem, the flying vehicles took far more space to navegate than road cars, since the require distance for safety it's giant. If 0,1% of people in big cities had a helicopter, there sould be no enough space on air.
Is the reported sodiun batteries, that promissed a 10x more power density than lithiun bateries in a very close future, a true or just a scam ?
Quote:
Originally Posted by Ecky
My opinion, the problem with flight is that it's far less efficient than ground travel, all else being equal. You expend energy staying aloft that tires do for free. I don't foresee flight as being common for every-day and short-range travel until energy becomes significantly cheaper.
And you bring up a good point about batteries. There ARE battery powered airplanes already, but they have relatively small payloads and short range.
https://newatlas.com/electric-aircra...stralia/52846/
Although the article is very optimistic (and it's quite an achievement to have a working electric plane at all), it's important to note that this airplane cruises at less than 100mph, with A 100 mile range in perfect conditions. The interior volume is limited to two cramped passengers and zero cargo.
On the flip side, operation costs are lower and it's probably a lot more reliable/safe. |