Steven Tyler is auctioning off the very first Hennessey Venom GT Spyder, which he purchased in 2012, to raise money for his charity, Janie's Fund, which helps support abused and neglected girls.

The minimum bid is $1.1 million, which is what Tyler originally paid for the car, and all of the proceeds are going to the fund.

Tyler tells FoxNews.com that he once took it up to about 140 mph. "It's incredibly fast, it's crazy, it drives well," he says of the car.

He also suggests taking it to an airport and letting the person running the place take it for a sprint down the runway.

For those interested in offering a bid for the one-of-a-kind sports car, closed bids are being accepted through the month of May at [email protected].