Was Senner's velvety A5 Cabrio not powerful enough for you? HS Motorsport, located near BMW's home turf of Munich, has decided to help out consumers by amping-up the S5 Cabrio into a 375-horsepower 'vert. Power output aside, this white cabrio looks like a dog on the side of the road next to Senner's metallic brown goodness.
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