A closer look at Crystal Pepsi.
Released in early 1992. Actually sold well it's first year, but by 1993 interest had waned and Crystal Pepsi was canceled. It tasted too much like regular Pepsi and it confused people who expected it to have a citrus taste like other clear colas.
In 1993, Pepsi released Crystal by Pepsi with a citrus taste but it was too late.
In 2005 Pepsi Mexico released a limited edition Pepsi Clear that presumably used the Crystal Pepsi formula.