Voice control is easy to find in cars, but its not always intuitive. You often have to use specific syntax, which might be hard to remember when youre barreling down the highway. GM may have a smarter approach in store, though. The Wall Street Journal understands that the automaker is working with machine learning firm VocalIQ on an advanced voice-control system that would let you control navigation, wipers and other car components in a more intuitive way.