Oh, that vehicle? That is
NOT an R35. That is Honda's very own HSV-010, made specifically for the Japanese racing competition known as AUTOBACS SUPER GT. And there's more than one of these, which is amazing because you should hear what they sound like.
Here's a video.
P.S. When could you transform into a Sneasel? I've never seen a car do that before.
EDIT: Oops, wrong video.