Based in both GTA V and GTA Online, The Zion is a variant of a sports car produced by Ubermacht. The Zion even has a cabriolet version.
It has relatively good performance and handling and is very common. Both the Cabrio and the standard car can be seen driving around the streets as standard, and insured in your GTA online garage. They are available for purchase from the Southern San Andreas Super Autos in-game website.