Host Richard Hammond shares more disastrous outcomes, including building the world's first hovercraft van and having a go at launching a Reliant Robin into space.
Relive the Top Gear team's attempts to constructing a V8-powered rocking chair, building Top Gear's own electric car, and making the world's first caravan-based train.
Highlights include creating stretch limos based on European cars, giving a Mercedes S Class a country cottage style make-over, and Jeremy Clarkson making a public information film.
Richard Hammond guides viewers through another batch of the most disastrous outcomes. Building an old, people-friendly car; creating motorhomes suited to British roads.