Witness a Christmas tree go 183 mph strapped to an Audi RS 6 Avant

Hennessey Performance Engineering has a different kind of holiday tradition. Most years, CEO John Hennessey sees how fast a car will go with a Christmas tree strapped to the roof. This year, Hennessey organized a new run up to 183 mph with his wife’s Audi RS 6 Avant. The high-performance wagon was driven by Ford Performance Driving School senior…