Toyota has twin turbo 6 hybrid experience in the WEC. While the GR stuff is probably a branding exercise, it would be interesting to know if there would be some sharing should NASCAR go the hybrid direction. I would imagine so as the narrative is GR unites all of Toyota's racing activities. On the consumer side, Toyota has a turbo 4, twin turbo 6, and soon a twin turbo 8 hybrid in the line up in addition to the hybrid 4s. A new manufacturer simply is not going to sing up unless the tech becomes more relevant, but I don't think that NASCAR is willing to spend to make this happen. Head scratcher for those who actually like the race cars.