MIT Autonomous Wheelchair

The project's goal is to enhance an ordinary ordinary powered wheelchair
using sensors to perceive the wheelchair's surroundings, a speech interface
to interpret commands, a wireless device for room-level location
determination, and motor-control software to effect the wheelchair's motion.
The robotic wheelchair learns the layout of its environment (hospital,
rehabilitation center, home, etc.) through a narrated, guided tour given by
the user or the user's caregivers. Subsequently, the wheelchair can move to
any previously-named location under voice command (e.g., "Take me to the
cafeteria"). This technology is appropriate for people who have lost mobility
due to brain injury or the loss of limbs, but who retain speech. The
technology can also enhance safety for users who use ordinary
joystick-controlled powered wheelchairs, by preventing collisions with walls,
fixed objects, furniture and other people. We envision that a
voice-commandable wheelchair could improve the quality of life and safety of
tens of thousands of users. Moreover, considerable health improvements and
cost savings could accrue through the reduction or elimination of
collision-induced injuries such as wounds and broken limbs.

Source:
https://www.csail.mit.edu/videoarchive/research/robo/autonomous-wheelchair

Links:
A self-driving wheelchair (with video 3:02)
http://news.mit.edu/2017/featured-video-self-driving-wheelchair-0726

Driverless-vehicle options now include scooters (with video 1:36)
http://news.mit.edu/2016/driverless-scooters-1107

Singapore-MIT Alliance for Research and Technology
https://smart.mit.edu