GOSY's "SafePath" wheelchair is amazing! I agree with you, Guibo, in that this is the low hanging fruit for GeckoSystems. The company demonstrates this new tech in videos taken at a mall and at a grocery store. I particularly like the one where nobody is in the wheelchair and it still navigates smoothly and avoids obstacles!. Here is the link to those videos:

http://www.geckosystems.com/markets/wheelchair.php