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The world’s toughest car races

Microsoft IES Logo By Sean Carson for MSN Autos of Microsoft IES | Slide 1 of 20

The world’s toughest car races

The flag has fallen on yet another edition of the Le Mans 24 Hours, which got us thinking: what are the toughest motor racing events from across the globe. On four wheels – sometimes two and even three – there are a number of different events challenging man and machine on a variety of surfaces.We’ve put together a list of the most physically and mentally challenging races – not to mention what they do to the vehicles involved. 
© BMW
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