There are just three days until the new series of Top Gear kicks off. Our exclusive preview of the biggest challenges and races continues... with our shot at 24 hour racing.

Now, you might remember that in the last series we planted the seeds to grow our own fuel. Well, those seeds turned into crops, and those crops turned into fuel, and our thoughts turned to what the hell we were going to do with it all.

The answer was a simple one: burn it off by driving round and round in circles at high speed. In other words, we'd go motor racing.

Not Mickey Mouse motorsport, either - using a specially prepared BMW 3-Series, and with a little help from His Stigness, we would tackle the punishing Britcar 24hr endurance race at Silverstone.

You might have read the abject and utter fibs in the papers about Hammond's 'crash' during the race, but what you won't know is how demanding, how exhausting and how exciting endurance competitions can be.

That's why you should make sure you watch this one, but don't worry - the actual item isn't 24 hours long.

Check back every day this week for more previews and video. The new series starts on Sunday October 7 at 8pm on BBC Two.

Check out our exclusive TGTV previews:

24 hours of Top Gear
Wet wet wet
Aston Martin Vantage vs jet man
Veyron vs jet fighter