Despite the fact that all 35 cars were modeled and are used, the same isn't true for all 35 drivers. In the scene where Tezla tells the drivers about the Wheel of Power the Esmeralda character model appears both in front of and behind Vert without having time to cross the intervening distance.
When the team is at the spinning wheel, Banjee says "The Greatest Challenge", but his voice is actually Brian's, who is not there.