The company is hoping to enliven its tired portfolio of vehicles with the launch of a range of light trucks and sport-utility vehicles (SUVs) later this year.
If all car firms in the world ran flat out, they could produce 68m cars a year (including other light vehicles such as pick-ups and sport utility vehicles).
Cricket Australia has given the 33-year-old the green light to participate in the tournament but told BBC Sport his international commitments remained his priority.
The HBO announcement means the loss of other Golden Boy fighters like Adrien Broner, who some expect to replace Mayweather at the top of the sport, and 48-year-old Bernard Hopkins, who won the IBF light-heavyweight title this month from Tavoris Cloud on HBO.