I have finish the hot pursuit grand tour but I dont have the last car plz help

2 Days ago I had every racer career car unlocked. I went to the hideout, thinking it would autosave (after I waited about 2 minutes), then I played titanfall. When I got back on Need for speed rivals, I only had my previously bought Lamborghini Aventador, and I do NOT want to go through the Grand tour again...