Per Motortrend:
http://motortrend.com/roadtests/coupe/112_0412_ev_porsche/index.html
"Of course, if we put the 911 engine in the Boxster, it would outperform the 911." This refreshingly candid aside, delivered by Dr. Wolfgang Duerheimer, executive VP of research and development, pretty much sums up the entry-level Porsche's predicament: Despite the mid-engine roadster's inherent handling advantage over its rear-engine big brother, the junior model must never be allowed to out-hustle the iconic 911. It must remain a rung or two behind as the 911 climbs the performance ladder."
This is going to get very interesting...
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