Jeremy Clarkson and James May unleash the fateful Top Gear mantra - 'How hard can it be?' - on car adverts as they are set the task of creating a memorable TV ad for Volkswagen. Despite vowing to work together to deliver a classic piece of advertising, the boys quickly fall out on set as James tries to fill every second of airtime with immensely complicated information about fuel economy, while Jeremy just wants everything to explode. Meanwhile, out on the track, Richard Hammond looks for an alternative to boring Germanic sports saloons and ends up going mostly sideways in the Vauxhall VXR8 Bathurst, before discovering it has a more interesting and practical sister for those of a rural persuasion. The Cool Wall returns after a long absence, and American chat show legend Jay Leno is the Star in a Reasonably Priced Car.