GM has been adding gears to automatic transmissions , reducing the weight of its powertrains and designing engines capable of being mass produced with high - tech features such as direct fuel injection and turbochargers . The template for GM 's future engine strategy is already on the road in cars such as the Pontiac Solstice GXP and Saturn Sky Red Line . The engine used in those roadsters is a 2.0-liter four - cylinder with direct fuel injection and a turbocharger . Horsepower is 260 -- the most per liter of any production engine GM has ever made .

Question: What may be the reason for their discussion about GM ?
Answer: They wanted to advertise for GM cars .They wanted to highlight the developments of GM cars .They wanted to bring in revenue for GM cars .They want others to have an interest in GM cars .