Lemantech
Highway Hunter
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Audi's captive tuner, quattro GmbH, stopped building the blistering 450-horse twin-turbo RS 6 at the end of 2003. We miss that supersled. Happily, its spiritual successor, the RS 4, arrives next spring. Its engine packs "just" 414 naturally aspirated horses, but thanks to nimble A4 bodywork, each horse is burdened with the same nine-pound load as the ponies in the RS 6.
Source: MotorTrend