In addition, the winner also received a guitar signed by each band member of Aerosmith, and a week’s vacation at Tyler’s mansion in Maui. All proceeds will go to Tyler's Janie's Fund charity, which helps abused girls in America, so at least the Spyder’s send-off is going to a noble cause. $800k may sound like a lot, but it’s considerably less than we predicted it would sell for. Originally, the savage Spyder would set you back a cool $1.1 million. Based on the Lotus Exige, the Hennessey Venom GT Spyder is powered by a monstrous 7.0-liter twin-turbo V8 engine, producing 1,244 horsepower and 1,155 lb-ft of torque.