Original: Designed to make racing affordable for the teams and to make it the perfect training ground for life in Formula One , GP2 has made it mandatory for all of the teams to use the same chassis , engine and tyre supplier so that true driver ability is reflected .
Simplified: GP2 was designed to be an affordable racing series and a training series for Formula One . GP2 requires all of the teams to use the same chassis , engine and tyre supplier .