Watch Top Gear Season 9 Episode 6 Online

The heart of the American motor industry is also the venue for the Society of Automotors Engineers annual symposium. William Woollard reports from the Exhihition Hall and visits the Ford Motor Museum. Rob Mahr looks at a new concept in labour relations at a General Motors plant, reports on a Jaguar success story and discovers one of the most influential organisations related to the motoring scene: the Mothers Against Drunk Driving campaign.