Question about the in-game Roadtrips? SPOILERS

Hi,

I am playing in game and have done the finale. I am now on “Part 2” and still being told to choose a roadtrip to a new location after each championship. Why can I not just stay in one place instead and complete the championship lists for that location instead?

I don’t really need extra XP now as I have all the perks. I earn enough in races to be able to level up.

Love the game by the way - amazing!