Plane when going overseas, train or bus for the experience. I once did the Grey Hound from NC to Los Angelas. That was an eye opener haha. But I made my flight back to good ol New Zealand so I have no gripes.
Among those 3, i choose bus.. I get sick whenever i go for airplane... And on train, i can't see the cool view near you coz of its speed =/
it depends in the place.... between bus and train...i'd prefer train, fast and convenient...less traffic!!!
It really depends on what the circumstances are. If I'm in a hurry to get where I'm going, which I'm usually is, I would prefer a plane for obvious reasons, cause it's the fastest and the plane means business when it comes to super speed. If I'm just traveling for fun with a lot of extra time on my hands, I would take a bus, because I do love sight seeing and taking pictures, which I can't do on a plane, unless I'm just interested in the clouds.
I would go for using the plane for long distance,train maybe into london but as for using the buses no way i would prefer to drive for short journeys.
I normally drive but I think it is more environmentally and economically sound to travel on an electric train.