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Comment Re:Sharing Economy? (Score 1) 215

For comparison, a typical gasoline-powered vehicle has a storage capacity of about 500 kWh and a recharge rate of 15,000 kW. The average driver consumes the gasoline equivalent of 57 kWh per day. Taking into account the fact that gasoline engines are about 25% as efficient as electric motors, each electric car needs about 14 kWh of charge per day, on average. While a gasoline dispenser can refuel as many as 100 cars/day, a charger can only supply 3 cars/day. So, you need at least 30 times as many charging stations as gasoline pumps to support the same number of cars.

Comment Re:Heavier than air flight is impossible (Score 4, Insightful) 350

Apparently, you don't fully understand the difference between physics and engineering. Technological barriers can often be overcome with advances in materials and design. Declaring them to be insurmountable has been shown to be foolish, many times. Barriers imposed by the properties of matter, on the other hand, are much more durable. Declaring them to be insurmountable is rarely a mistake.

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