SPIELBERG, Austria - Sauber driver Esteban Gutierrez will start the 2014 British GP at the Silverstone circuit in July with a 10-point grid penalty. A dreadful pits-lane mistake at the 2014 Austrian GP saw him move off without a wheel properly attached. The incident occurred after the first pit stop during the 2014 Austrian GP, as the team noticed a wheel nut on Gutierrez's rear right-hand wheel had not been properly fixed. He was ordered to stop his car in the pits lane and was pulled back by his mechanics but this also caused team mate Adrian Sutil to stop on the way back onto the track, slowing his time. ‘NOT ACCEPTABLE’Race stewards have now slapped Swiss team Sauber with the penalty for "releasing a car in an unsafe condition during the race."Team chief Monisha Kaltenborn said in a statement after the race:"Our work today is not acceptable. Such a mistake at a pit stop must simply not happen. We will carefully look into our procedures and the consequences, and we will take appropriate measures."