Green’s Dictionary of Slang

bus v.1

also bus it

to travel by bus; thus similar tram it, to travel by tram.

[UK]New Monthly Mag. LIII in DN IV:ii 140: A little too bad [...] that you and I should be compelled to ’buss it.
[UK] ‘’Arry on the Road’ in Punch 9 Aug. 83/1: The wrinkles and tips I ’ave landed a-’busing it to and from town!
[Aus]Bulletin (Sydney) 5 Jul. 13/3: The following morning saw him in the usual place tramming it to town, with heavy dark goggles over his eyes.
[UK]‘Doss Chiderdoss’ ‘Habits’ Sporting Times 16 Jan. 1/2: She ignores the rail, and scorns to ’bus or cab it.
[UK]R. Cook Crust on its Uppers 21: Morries never walk or bus it.
[UK]K. Richards Life 49: Up to the age of eleven I’d bus it there [i.e. to school] and walk it back.