Every car is integrated into the Blacklist system. You earn them by beating bosses, just like 2005, but now the reward garage is massive.
The Redux V4 package focuses on modernizing the game's visuals and expanding the car roster while keeping the original "Blacklist" gameplay intact. Expanded Car Roster : Adds over nfs most wanted redux v4 free
V4 adds over 100 "addon" cars. You aren’t just stuck with the original list; you can now pilot modern supercars and JDMs that weren't around in 2005. Every car is integrated into the Blacklist system