[Nasrudith]

I think your math is off - planes are usually loaded with people and per person mile far better than a mere roadtrip. You should divide the airplane emissions by at least 70. Fluid friction vs rolling helps a lot.

While trains and fully loaded buses may be superior it is still far from the worst evil for long distances.

[mattlutze]

You can have a look at the calculations if you'd like. There's a deceptively high amount of emissions with jet kerosene, even with the planes loaded up.

https://www.carbonfootprint.com/calculator.aspx