Mattel has a new partnership in store with Nintendo, though we won’t see the results until next year. Announced today, Mattel is releasing a Mario Kart-inspired line of Hot Wheels. Mario, Luigi, Peach, Wario, Rosalina, Toad, Bowser, and Yoshi are featured. The Mario Kart Hot Wheels toys will be appearing at Comic-Con this week. Unfortunately, they won’t be ready until...