It is hard to take you seriously. Open up Google Maps in the USA, and see how long it takes you to walk, and bike to a place. People buy the expense of a car for a reason; biking, and walking, is the least efficient. Transit systems do not work in the US, because everything has to be planned around them. They’re bureaucratic, and rote. City transit systems are the essence of this bureaucracy and rote. It does not serve people as they intend to live.
In terms of getting to an exact location, the most efficient is no vehicle, walking.
Cars are less efficient, followed by busses, then probably trains, then boats, then airplanes (unless you parachute).
Cars are the least efficient in terms of moving large numbers of people from places they can then walk from.
The most efficient is obviously a combination of methods, using the fastest methods for each leg of the journey.
In the US, right now, taking a car from point to point, then walking into your location is the fastest combination in most cases.
It is hard to take you seriously. Open up Google Maps in the USA, and see how long it takes you to walk, and bike to a place. People buy the expense of a car for a reason; biking, and walking, is the least efficient. Transit systems do not work in the US, because everything has to be planned around them. They’re bureaucratic, and rote. City transit systems are the essence of this bureaucracy and rote. It does not serve people as they intend to live.