At Siemens where fleet manager Roger Glenwright is in charge of 2,500 cars, the mostly-Vauxhall buyer said: 'They have done enough. I personally see no threat to the big two who are both producing good cars. Changing the Mondeo makes it look stunning and gives it a very big visual impact. Both vehicles represent good value for money and great packaging. It is surprising that they both continue to leak market share because I don't think the competition is that good. The market leaders have got it right and I don't think it matters which horse you back. I can understand the competition wanting a slice of the cake but I cannot understand why my peer group helps them to get it.'