Filtering the Grothendieck ring of varieties

The Grothendieck ring of varieties over $k$ is defined to be the free abelian group generated by varieties over $k$, modulo the relation $[X] = [Y] + [X \backslash Y]$ for all $X$ and closed subvarieties $Y$. Multiplication is induced by cartesian product. Using algebraic K-theory and purely geometric intuition we present a categorification of this ring. This category carries a filtration which does not exist on the ring. This allows us to construct a spectral sequence whose 0th column converges to the Grothendieck ring of varieties and identify the next column.