You need a Gold account to use online features (including leaderboards) unfortunately. But if you haven't seen them, there are multiple classes of cars and multiple sections of leaderboards. There's circuit, which includes the fastest times on every track (about 95 with every environment and variation) for classes F-X separately. There's drag and ovals for those same classes, drifting for each drivetrain, leaderboards for tuners, painters, photographers, and film makers (these are based on how many views/downloads you have on your storefront), and then there are also various rivals events. These rivals are either in stock or spec cars and everyone is put on the same playing field for the most part. You could say some rivals are more dependent on driving skill than tuning. Rivals are also updated monthly to keep things fresh, though it's only a few per month. Oh and there's also autocross events for certain classes. That's where you weave through the cone gates on a track as quickly as possible. Hope this helps!