Mattel is debuting new Hot Wheels collectibles at San Diego Comic-Con, with some outlets reporting that the collectibles will be available starting July 23. The new releases appear to include a range of pop culture-themed items, such as Stranger Things and Marvel characters, as well as collaborations with other brands like Monster High and Mario Kart. The exact scope and details of the debut are unclear, with some reports referencing previous years' events and others focusing on this year's releases.