[source: ABT Sportsline] Speech is silver, just doing is gold – just typical for ABT Sportsline! The Bavarian company will produce an exclusive limited series of the ABT Aerowheel concept study, which was met with great enthusiasm in Geneva. The wheel will only be available in Racing Gold and 21". After the limited special edition ABT RS4-R has now sold out and there are only precious few of the corresponding ABT RS5-R coupés remaining, the Bavarian tuner then already has the nex...