My travel radius has been about 600 miles from San Diego to Sacramento, CA and from San Francisco, CA to Las Vegas, NV so I have not used any air, train or bus since I got my Model S in 2012.
But thanks for the answer, I now do understand the poll question which does not mean to trick me
It could be rephrased:
"Now that you own a Tesla, but if you need to use a non-Tesla for public transport, what would you miss most?"
If it is a non-Tesla car, such as a rental car, I would miss its intuitiveness: Just walk toward it and it greets you by extending its door handles. There's no need to remember to turn on or turn off the car. There's no need to remember to unlock or lock. There's no need to remember to turn on/off cabin lights/headlights...
If it's air transport, I would miss my independence: Here we go again: Home Land Security is going to have a field day touching me all over. If not, they insist on bombarding me with invisible rays that they say it's completely harmless! I would rather to drive my Tesla 3,000 miles across the county than got molested physically/environmentally in an airport!