[ghostbust555]

This is exactly my point (the after 3 years if it decomposed you are just time shifting) which is why I asked how long the roads take to decompose and what they translate into. Sooner or later that lignon in the road will become C02. But is that in 10 years? 100? If its time shifting it only by 15 years or so then its NOT reducing the total carbon to the atmosphere, just temporarily storing it. No different than putting the lignin in a warehouse for 15 years before burning it. So to call that carbon negative is just... bad math at best.