Tonight, the delightfully belligerent presenters shop for second-hand convertibles, uncovering the pitfalls to look out for when buying a used car. Simon Pegg takes to the track in the Reasonably Priced Car and Jeremy Clarkson test-drives the Pagani Zonda R. What's more exciting, however, is a new series called Toughest Place to Be a Paramedic at 9.00pm, This new documentary following them across the water as they try to do their regular jobs in some of the world's most demanding locations. Cardiff paramedic Angie Dymott travels to Guatemala City, where she spends two weeks working alongside ambulance crews in an urban environment dominated by vicious street gangs, and discovers how the arrival of Mexican drug cartels has made the city an increasingly dangerous place to live.