Stem Cells and Scar Tissue

So, I heard some old fart from toronto had his own stemcells injected into the scarred tissues of his heart, rejuvinated the cells to restructure in a proper and have much normal elasticity compared to scarred.

Besides my next point, do you think this type of stem cell injection to be all that advanced? They take a needle and siphon the whiteblood from your bones and seperate the stemcells (guessing that's the hard part??) and inject them directly by needle to the affected areas.

My main point, could stemcells be injected into scar tissues on our exterior for people with extensive burns and the like to possibly fully restore there normal looking tissues by cell memory??