For such an owner, Lamborghini has presented the Egoista Concept – perhaps fittingly, the car was unveiled at a private 50th birthday party that the automaker seems to have thrown for itself.

Purchased by a secret collector for rumored $117 million, this is the Lamborghini Egoista, the rarest and most expensive ever made. It is built using radar-absorbing materials found in stealth jets.

Visitors at the Lamborghini 50th anniversary celebration in Sant' Agata got that rare opportunity when the Egoista made its presence felt. Nothing says, "I have arrived" quite like a 5.2-liter V10 ...

with the introduction of the one-off Lamborghini Egoista – a 50th birthday present from head of VW Group design Walter De Silva. The single-seater is powered by a 592bhp 5.2-litre V10 engine ...