Jeremy Clarkson, Richard Hammond and James May conduct a valuable piece of consumer research with their attempts to improve and enhance the ambulance.Starting with a belief that current ambulances, which are usually very big and based on a diesel van, are in need of a rethink, the presenters go their separate ways to focus on the one area they think could be improved. May focuses on passenger comfort, Hammond tries to improve response times by getting other drivers out of the way more effectively, while Clarkson confronts the same issue with the invention of what he calls 'the sports ambulance'.Their three very different creations are then put to the test with a series of severe and often messy challenges, culminating in a fast reaction to a spectacular emergency.Also in this episode, F1 driver Daniel Ricciardo is the star in the Reasonably Priced Car.