Wheelchair Convoy System
From: FLC Newslink - 01/11/2013

The Department of Veterans Affairs (VA) has developed a wheelchair convoy
system (WCS) that will allow one attendant to transport a group of people
safely at one time. 

Read the entire article at:
http://newslink.federallabs.org/2013/01/11/wheelchair-convoy-system/
http://www.research.va.gov/programs/tech_transfer/technologies/07-098.pdf

View a video at:
Semi-autonomous Wheeled Mobility System
http://www.at-sciences.com/projects/three_chairs_slalom.mov