Well, there is always the law of Diminishing Returns. Being a car guy, I like car analogy stuff.
A new Toyota Camry TRD priced at $31,170 does 0 - 60 in 5.8 seconds
A new Ford Mustang GT priced at (base) $35,630 does 0 - 60 in 4.2 seconds
A new Ferrari F8 Tribute does it in 2.9 seconds. To get that extra 1.3 seconds of speed the car will cost you $276,550
For those that want and can afford the best there is always a price to be paid.