VIDEO: Lexus IS-F Race Track Driving Scenes

The Lexus IS-F gets down and dirty at the PR driving event held at the Fuji Speedway in Japan. The video shows some nice static shots, clearly audible engine revving sounds as well as high speed cornering. Packing a 423hp (3hp more than the new BMW M3) 5.0 liter V8 an observant Autospies.com reader notices the speedometer at 240km/h (149mph) in 6th gear. The IS-F has the world's first 8-Speed Sport Direct Shift transmission, therefore, with two more gears to go, what do you suppose is the top speed?  We will find out when Lexus reveals the full details at its public unveiling at the Tokyo Motor Show in a couple of weeks.