Edinburgh Sheriff Court heard yesterday that Alan Gunn picked up Nathan Mackay, 22, and Rebecca French.
Mackay and Mr Gunn rowed over a 10.50 fare and Mackay attacked Mr Gunn.
Mackay, of Sinclair Place, admitted to the 26 July 2009 assault. A not guilty plea by French, 21, of the same address, was accepted. Sheriff Derrick McIntyre deferred sentence until next month.