User blog comment:Profoundly Quiet/Hardest Car to MAX + PRO?/@comment-116.203.73.138-20160116094301/@comment-27524282-20160116194455

The only SSC car I have maxed is the Aero XT. I don't plan on getting it to Pro anytime soon with how many engine and tech cards it needs. As for the Tuatara, the only reason I have it fully upgraded on top speed was to use up the free S class upgrades from collections and mastery rewards.

For the speed modifier, only the Veneno, Huracan and Cadillac 16 have an honest speedometer. The Enzo's top speed is fake.