User blog comment:Profoundly Quiet/Hardest Car to MAX + PRO?/@comment-25051390-20160120153050

Hardest to PRO for me so far has easily been the Ferrari Enzo Ferrari. 48 (!) legendary V12 engines, not helping is the fact that they very rare give these out of random Pro Boxes. In fact, I managed to go a month and a half in between V12s from random boxes.

Even now, I am still 15 engines short of completion, as my Enzo is currently at PRO level 4-4-5-3. Granted, I purchased two of those promotional engine boxes with a bias towards normal V8, and those boxes were quite cooperative.

Still, I stopped caring about Class S, because I know that I will never be able to PRO them while they are new, except the Lamborghini Egoista, but that will not beat my Enzo once I complete the latter. Still, they are extremely stingy on engines.