I think it's worth noting that the headline (and by that, I mean the one on Treehugger) is a bit misleading--the maintenance crews are adding the garlic salt to

I think it's worth noting that the headline (and by that, I mean the one on Treehugger) is a bit misleading--the maintenance crews are adding the garlic salt to road salt, not simply pouring garlic salt on the roads. That's not to say this isn't swell, though--not only is that garlic not going to end up in a land fill, there will be a cost savings given that the current stock of road salt will last longer.