HS2 chairman David Higgins is facing a select committee bashing over the state of his beleaguered white elephant – and MPs would be forgiven for asking if he has taken his eye off the ball. Higgins is paid a £240,000 salary by the taxpayer for a three day week at HS2. What does he do the rest of his time? He is also the chairman of Gatwick Airport, a nice little earner and hardly a job that requires no attention. He is a director at the Commonwealth Bank of Australia, where his roles also include chairman of the bank’s Remuneration Committee and sitting on the Risk Committee. Kerching. Job number four is as a “senior adviser” at fund manager Global Infrastructure Partners. Higgins is no doubt enjoying George Osborne levels of success in the private sector. The Transport select committee will be interested to know why his very well remunerated job working for the British taxpayer is going so badly by contrast…