Autonomous cars- a disruptive innovation

Autonomous cars use a variety of techniques to detect their surroundings, such as

Radar
Laser light
GPS,
Odometry and computer vision.

Possible Technological Obstacles

Artificial Intelligence still isn't able to function properly in chaotic inner city environments

A car's computer could potentially be compromised, as could a communication system between cars.

Susceptibility of the car's sensing and navigation systems to different types of weather (such as snow) or deliberate interference, including jamming and spoofing.