You know what's not terrifying enough? GPS systems. Thank goodness for Charles.
Charles, you see, is a bodiless GPS system that vaguely resembles a man's head and shoulders. It sits in your passenger seat (as much as a bodiless GPS terrorbot can sit anyway), reads your facial cues, tone of voice and other behavior and provides directions in a way that's sympathetic to your mood.
The folks at Cambridge assure us that Charles is about 70% accurate at gauging the emotional state of the driver.