Sonic Adventure 2: Battle Easter Egg - Street Sign References
In Radical Highway, you may have noticed some street signs hanging above the course.
Amigo: A reference to Samba De Amigo, another popular SEGA franchise.
Freedom: A refernece to Planet Freedom, from either the Fleetway Sonic comic series or the old Sonic cartoons (SatAM/Sonic Underground), can't remember which.
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