Complex sentence: Originally Honda was supposed to end their IndyCar Series single engine supplier after 2009, but on September 23,2009, it was confirmed that Honda renewed their single engine supplier until 2011 season.
Split into simpler sentences: Originally Honda was supposed to end their IndyCar Series single engine supplier after 2009. But on September 23,2009, it was confirmed that Honda renewed their single engine supplier until 2011 season.