For 2013, Audi is extensively updating its R8 supercar.
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If you have to ask, you're likely just not cool enough to understand.
Audi will build a new four-cylinder engine to run as smoothly as a V-6 or V-8.
We haven't gotten this excited for a rear-view mirror since Pearl Jam's greatest hits, but Audi has managed to advance the art of looking behind us and promptly ignoring what's there.