Drivers in the US and Canada are in for a bit of sticker shock as General Motors has made three years of its OnStar subscription service mandatory in many new vehicles at a cost of $1,500.The little-noticed change took place in early June, the Detroit Free Press reported, when new GMC and Buick vehicles being sold in North America had the aforementioned line item added to sticker prices under "options and pricing."The accelerating creep of à la carte carsAutomakers have been planning to implement subscription services in their vehicles for several years, and chipmakers have been along for the ride, seeing such features as a way to get more money from automotive contracts.- US car industry leads the world in production cuts over chip shortages- Apple's secret car team tosses keys to Lamborghini lead- Software issues cost Volkswagen CEO Herbert Diess his job- Is the Apple car real?Speaking to the Free Press, Sam Slaughter, the owner of Sellers Buick GMC in Farmington, MI, said customers haven't pushed back much on the change, but he expressed dissatisfaction that GM labeled its now-standard OnStar add-on as an option."