An article in BloombergBusinessweek (August 29, 2018) titled “The Stunning One-Year turnaround of GM’s German castoff” describes a focus on reducing part variety. The article describes reduction of the 57 possible infotainment systems for the Corsa hatchback to 10. It also reports the number of windshield wiper options from 16 to 9 to improve efficiency. Will simplifying designs decrease spare parts revenues in the future? Will car prices be lowered to drive volume given lower costs and higher efficiency?