All cars: Enter Loaded as a career name. CART car: Enter Downforce as a career name. All tracks: Enter Road Sweeps or Road Sweep as a career name. Low gravity: Enter Feather as a career name. Disable HUD: Enter No Dogs as a career name. Slow motion: Enter Poke as a career name. Slow CPU cars: Enter Walk It as a career name. Extreme difficulty: Enter Road Trip as a career name. Pilbeam LMP: Enter Swallow as a career name