John Gentile

The Van-Pires synopsis and its stories center on a group of human teenagers who protect and defend the world from evil anthropomorphic junkyard vans and vehicles known as the "Van-Pires" by transforming into robotic anthropomorphic cars, calling themselves the "Motor-Vaters". (Wikipedia)

In a future decimated by war, only a small band of humans survive. The radiation from the war has created many new species, including huge, semi-intelligent dragons and evil mutants. The only source of power is the volcanic stone amber, but locating it is a constant problem, with the mutants and other species laying claim to their finds. Protecting the city is an elite group using the dragons as transport. (imdb)