Perhaps it was a GTP? I got smoked by one in my accord (which I should have of course... I deserved to loose I was just harrasing my GF....) watch out for those Supercharged Grand Prix's... the GTP is mean... Here's a qutoe from Motor Trend Magazine
"The Grand Prix GTP fits the OHV 3.8-liter engine with an Eaton supercharger for 260 horsepower and 280 lb-ft of torque, besting even the quick 240-hp Honda Accord and Nissan Altima."
http://www.motortrend.com/roadtests/...rand_prix_gtp/