Nope. F1 car can't hit 400 km/h in principle due to aerodynamics. And Veyron needs around 11 km of straight line for 400 km/h, here it like 100 meters.
Also there is no tires in existence which could possibly hold this car inside the turn at such speed
An F1 can hit 400, it just needs a lot more power, so its not a simple "cant'" in principle. But unless you mean in their current state, you are right f1 cars can't hit 400. Unless ofcourse they had perfect tailwinds of over 70kph(which doesn't commonly happen lol), and even then they would need modified gear ratios and aero.
One thing you have misinterpreted however is its not just the tyres that give the x1 that supposed amazing road holding, its the downforce, or rather suckforce. I've actually wondered why people don't use fans to suck cars to the ground for over a decade, looks like someone finnally had the same thought in 2010 and did something with it.
Though realistically, even if you built this car it would NOT turn out in the state you see it in gt5, it would be a deathtrap that hardly ever works to its full potential.
You will get amazing grip in the right conditions, and you could probably pull close Gs to what you see in gt5, but any sort of bump or mishap or flutter in the aerodynamics will immediately loose all that roadholding and will send the car flying into oblivion.
You guys are arguing about the driver not being able to handle the Gs but thats childs play compared a real life built X1 behaving in a way the game illustrates it. I think you can safely bid farewell to anyone that attempts to replicate that reply in real life because the car will get unstuck and fly off the road. That said a much toned down version of what you see in gt5, but still crazy none the less is very doable in life IMO.
