The game menu should be redesigned right now in this early stage IMO. This is all about usability of the game, No.1 characteristic in terms of success imho.

Change #1 - Tuning menu right before picking up a race:
Given the game is focused on 'fastest laps' for each car/circuit/category of upgrades, the link for the so-called "Tuning Menu" should appear right before entering a race. This way, we could just pick it up the right upgrades which make the car fit into the desired race category and be ready to go (at least for already bought upgrades). I found just boring going back and forth into the "Race Series" then all the way back to the Tuning Menu and back again.