The thing is that cars (and bikes, and to some degree planes) are point-to-point. This decentralized mode of transportation is much more efficient when it comes

The thing is that cars (and bikes, and to some degree planes) are point-to-point. This decentralized mode of transportation is much more efficient when it comes to satisfy the needs of many commuters. For instance, by bike I save at least half of the time compared to Subway. And I have access to a well-developed subway and I do not need to change. I agree, though, that planes will never be a replacement for cars or even bikes. That is because the utility per € is much higher for the former. A bike is generally cheap. A car is much more expensive but can carry four or more persons very far in pretty much every weather. A small electric plane is going to be even more expensive (conjecture) but otherwise worse than a car.