I know SOME of the costs. Suspension is 1k per corner, gearbox is 10k but bulletproof unless you fit one of those tuning boxes that alters the drive by wire signal to make it more responsive (fail).

But a car that will seat 4 adults in comfort, has massage seats and every gadget you can think of, one of the best auto gearboxes in the world and 600hp with 750lb/ft, does 0-60 in 4 seconds and will do near 210mph greatly appeals to me.