Simplify the following text for a Grade 10 native English-speaking person.
Original: On 27 March 2006 , the five Grand Prix Manufacturers Association-backed teams submitted their applications for the 2008 season .
Simplified: On 27 March , 2006 , the five GPMA-backed teams ( Jaguar , Honda , Ferrari , Toyota , and Renault ) submitted their applications for the 2008 season .