Here are a few more details from their site:
The Lexus LF-A concept features an engine capable of developing more than 500 horsepower from a displacement of less than five liters. With a combination of optimum gearing, weight and aerodynamics, the LF-A concept would produce a top speed in the neighborhood of 200 miles per hour.
“The LF-A is theoretically developed to run a parallel course to our company’s efforts in Formula One racing,” added Press. “It would probably feature a powertrain and drivetrain configuration strongly influenced by whatever is being used in competition at the time.”
Inside, the LF-A is designed as a luxury high-speed capsule that blends extravagant comfort with precision operation. Although it is more than two inches shorter in length than the Porsche 911 Turbo, its wheelbase is nine inches longer.
At 48 inches, it is nearly identical in height to the Ferrari F430. And with a width of 73.2 inches, its splits the difference between the Mercedes Benz SL55 and the Aston Martin DB9.