 Previously, cameras had only been mounted to F1 cars during testing, but since then, more and more cameras have been fitted.Since 1998, all Formula One cars have been fitted with at least three onboard cameras (usually more) and they form an integral part of the television coverage.As with US onboard coverage, F1 used a helicopter as a local satellite to pick up the transmission from the cars and re-broadcast it to the truck / local production center.