it would be better to have buses where trains doesnt go, for example vault city - new reno - sf route or something like that :> as with current travelling speed you spend more time alt tabed then being actually in game.
That might be fun. If it was possible, you could have it work kind of like that idea for travelling with a Caravan. You might randomly have to pile out of the bus on rare occasions to help the other passengers deal with some bandits trying to shake down the Bus, for instance.
Bus was to appear in Fallout Tactics but it never made it into the final build. It appears only in a promotional render image.
I like the idea. Even seen this: (link)