Another day, another flight. As sales director for Rearden Commerce, a start-up in Foster City, California, Mike Lawrence flies 100,000 miles a year but admits that since the recession, his travel is under greater scrutiny. “Not so much on whether I need to go to a different city for a meeting, but making sure I opt for the lowest cost in all areas of travel – air, car, hotel, dining, parking. All of it matters now,” he says.