Rumors of big-ass Lexus engines have been confirmed. The Lexus LF-A supercar concept that's been patrolling every major car show this year — introduced with talk of 500hp, a 200mph top speed and under 5.0-liters, but no other details on the powerplant — is powered by a V10. The secret came out in the company's press materials for the 2005 Tokyo motor show, which indicated the ten banger was under the hood (yes, in the front). With a new V10 Honda NSX and Nissan's upcoming GT-R on the way, it looks like the Japanese supercar market is going through the roof. Get in on the ground floor, kid.