Sony and Polyphony Digital are celebrating Gran Turismo’s 20th birthday a few months early in preparation for the launch of Gran Turismo Sport next week.

A video released today features executives from Polyphony and Sony explaining a bit of the history of the series and what it’s been like to work on the games. President of Sony Worldwide Studios Shuhei Yoshida also explains how Polyphony CEO Kazunori Yamauchi’s always optimistic attitude encouraged the team during the development of the original Gran Turismo.

There are a lot of interesting quotes about the series’ development and how it’s changed over the years, including tidbits about the scale of Gran Turismo Sport and the effort that has gone into developing it. Be sure to check out the video below.