There are 76 DreamWorks Animation Logos and they are awarded for several things, winning each circuit cup in each of the CCs and Mirror Mode, beating each challenge, setting a time in each time trail track and there are some hidden around the tracks. Simply collect them and it unlocks. If you have won all the cups, done all the challenges time trails and still missing some (there is a total on the main screen) The best way to check what ones you need is go on time trail, pick a track, pick a racer start the race and on the screen where it says press a to continue (start of race screen) there are 2 DreamWorks logos if they are both white you have both and should quit out and load up the next track. if one is faded out then you need it in the track so drive around looking for it thats why time trial is best becuase you do not need to worry about any other racers or time limits There is no quicker way of seeing if you have the collectable which is a pain. Guide for harder to find logo's Here.