i don't think so, it was on an island with a small village arguing over who was fastest, postal truck, a digger, firetruck...later on there was more levels to race on, so not just the island, but a weird portal opened or some shenanigans
i got lego racer 1 on n64 recently and find it so hard to keep up with the cpu in 1st place, need to constantly get the warp boost just to win
so you never unlocked the other agents?they added some pretty cool gameplay