> I'm not sure why you think busses are more equivalent to planes other than holding more passengers.
The more I think about it, the more similarities I find. For instance, both long-distance buses and large airplanes are usually boarded only at dedicated places (bus terminals and airports); both have a separate baggage compartment below the passenger floor; both have built-in bathrooms; both are driven by trained drivers/pilots; both have a set schedule for departure; and so on.
I've taken plenty of long distance bus trips (12 hours or more in each direction), and I've also taken many airplane trips (usually on the 737 family), and I'd say the experience on both is very similar: taking a taxi to the bus terminal or the airport, looking for the correct spot or gate for boarding, putting most of the luggage in the lower compartment of the bus or airplane, waiting until the scheduled departure time, sitting still on your designated seat for most of the trip, arriving at the other terminal or airport, retrieving the luggage, taking a taxi to the actual destination. There are some differences, for instance on a bus there's a rest stop for food after several hours, while on an airplane they serve some food in the vehicle itself, but these differences are minor compared to the differences between an airplane trip and a car trip.