The Scot takes a moment to explain the main differences between the 2012 DTM Mercedes AMG C-Coupe and last year's AMG Mercedes C-Class sedan.

With former Formula One driver David Coulthard set to start his third season in the DTM (German touring car series), the Scot takes a moment to explain the main differences between the 2012 DTM Mercedes AMG C-Coupe and last year's AMG Mercedes C-Class sedan.

New highlights for the 2012 car include larger wheel/tire size, semi-automatic gearbox, removable carbon fiber crash structures and a complete carbon fiber tub/safety cell.

The 2012 season marks the first year Mercedes-benz, BMW and Audi are all competing in the DTM at the same time.

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