I was literally wondering about this question the other day. It's 2018; we can make CPUs with 12nm features but we can't make a long lasting asphalt?

Fascinating:

    Nichols said the AMIR “has great potential” to extend 
    the life of roads, and “save significant taxpayer 
    dollars.” In 2016, an MTO analysis found that the 
    province would save $50 million annually if roads on the 
    MTOs highways could last even one year longer.

    "The MTO is not planning on buying or specifying the use 
    of AMIR asphalt rollers..."

Might be of interest, too: http://www.dykespaving.com/blog/why-use-asphalt-instead-of-c...