It's the Racing Project Bandoh Lexus IS350, which races in the GT300 class in the Super GT series. We've known about its existance in the GT5 demo, but there has been very few videos and pictures featuring it.
It's the Racing Project Bandoh Lexus IS250, which races in the GT300 class in the Super GT series. We've known about its existance in the GT5 demo, but there has been very few videos and pictures featuring it.
I believe you've mistaken the ASL Garaiya for the Arta NSX.