Can self-driving cars even honk their own horns?

Autonomous vehicles (AVs) will likely change the way we get around forever, but the AI that controls them might not be able to tell other cars on the road when they're driving like assholes. 

At least not at first. 

Case in point: The City of Las Vegas and AAA's self-driving shuttle, one of the most advanced public autonomous trials in the U.S., was hit by a semi-truck within hours of its maiden trip last month. The Navya Arma bus was stuck between a car behind it and the slowly advancing truck, which backed its way into the the shuttle.  Read more...