It mostly is, but way at the boundaries of performance where cost is no object, I wouldn't be surprised to see a company like Koenigsegg advance beyond normal l

It mostly is, but way at the boundaries of performance where cost is no object, I wouldn't be surprised to see a company like Koenigsegg advance beyond normal limits, using pricey materials like cobalt steels, sintered powdered iron, phase-change cooling, or other tricks that are beyond mortal budgets.