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A battery-powered supercar? Such a thing does exist - it's called a Tesla and Jeremy drives it on the track. James also forsakes the petrol engine this week to drive the hydrogen-powered Honda Clarity in California.
Richard celebrates the 50th year of British Touring Cars and Sir Tom Jones is the Star in a Reasonably Priced Car.
Did Communists ever build a good car? A question literally several people have asked - ever. To find out, Jeremy and James go to the former American airbase at Greenham Common, in England, to drive some of the best examples still working... just.
Richard drives the Veritas RS3 - the latest sports car to come from Germany and the Caterham R500. Meanwhile Jeremy gives the humble Ford Fiesta a rather thorough going-over with the help of the Royal Marines.
The Mayor of London, Boris Johnson, is the Star in a Reasonably Priced Car.
The 40th birthday of the Ferrari Daytona is celebrated in true Top Gear style with a race along the Riviera from Portofino in Italy, to St. Tropez in France. Richard, driving the Daytona, will race James who is in the world's fastest production diesel powerboat, the romantically named XSR48.
Grand Designs presenter Kevin McCloud is this week's Star in a Reasonably Priced Car.
Finland has produced some of the finest drivers in both Formula 1 and rallying. James travels to the country and meets Mika Häkkinen to try to find out why this is so. Richard travels farther afield - to Japan - to drive the Toyota iReal which is not so much a car, as a chair with wheels.
This week's challenge is to try and make a second-hand car lap the track faster than a Mitsubishi 300. The (second-hand) car in question is the distinctively unsporty Renault Avantime.
Jeremy finds a new use for a V8 engine; he thinks it will provide a suitable amount of power for a food blender.
Benefiting from the suspension of Friday Night with Jonathan Ross, Top Gear gives Mark Wahlberg a place to plug stuff and a go in the Reasonably Priced Car.