The latest Skyline is known as the Infiniti G35 in the US, since Nissan and Infiniti are the part of the same company. It's just like Honda and Acura or Toyota and Lexus. They target different markets and consumers. So no, the Skyline didn't die out. This time it's going to be under Nissan, which is a good thing.
yeah I thought at first the Koenigsegg CCX would beat the Veyron but turns out it falls just short. The 2006 Bugatti 16/4 Veyron still holds its ground as the fastest street legal supercar.