The Chevy Sonic was the first car to have Apple's famous virtual assistant, Siri, incorporated into its on-board systems. Photo credit: General Motors.

More and more, high-tech features are an important part of selling cars. But few automakers have gone as all-in as General Motors (NYSE:GM), which was the first to offer Apple's (NASDAQ:AAPL) Siri in its cars -- and which will have a 4G data connection built in to nearly all of its 2015 models here in the United States.

Buyers won't be obligated to pay for those data connections, which will be provided by AT&T (NYSE:T). But GM CEO Dan Akerson hopes you'll find the service irresistible -- because as Fool contributor John Rosevear explains in this short video, Akerson has big plans for GM's connected cars.