While chatting on Interpals, I asked a bunch of teenagers (aged 15-18) from different countries:
"Do you prefer to travel by car, bus, metro, or airplane?"
Here are the responses I got: Lamyae, Germany, 15
“I prefer to travel by car and by the airplane.”

Hemdal, Sweden, 18
“Probably train. Really love just leaning back and relaxing throughout my journey. Reading a good book, listening to music, travelling with friends and having a nice conversation through the trip. Prefer it over airplanes since it's less cramped and prefer it over buses because you can't get sick (not that I ever get sick, but still…)”

Lin, Brazil, 18
“Well, I do not know for sure if I can answer this question because I have never traveled by metro or plane, but either way, between car or bus, I prefer car travel.”

Leonel Sebastian, Argentina, 18
“I like to travel in airplanes for outside but inside in bus.”

Talha, Turkey, 16
“I prefer car.”

Chloé, France, 16
“So, I've never taken airplane, and travel by bus is AWFUL... Therefore I prefer car, however I think train is the best way to travel! :)”

Jealisha, Guyana, 18
“I actually like both car and airplane, car for brief overland traveling airplane for long distances.”

Daria, Russia, 17
“I prefer to travel by my legs: D”

Thanks for all the responses! Check out my interpals profile here