I understand this for inside a city, using a car is more pleas sent then sharing a bus or metro with strangers but when you travel a long distance you use a plane so all the comfort is gone, it would be better to have a high speed train , you still share it with strangers but if you are rich you can afford better accommodations including beds, you can walk and stretch your legs and there may even be spots for smokers. Maybe the average person travels only a few times with a plane so he can endure it.