A bank of blue lights illuminate the car to be tested that has pressure-sensitive paint
applied on the driver's side window. The car and lights are in a wind tunnel at Ford Motor
Company's Dearborn Proving Ground. Ford researchers have developed a computerized,
pressure-sensitive paint technique that measures airflow over cars, shaving weeks off
current testing methods. A digital camera near the blue lights captures this information and
feeds it into a computer, which displays the varying pressure as dramatically different
colors on a monitor.