  The Grothendieck ring of varieties has well-known realization maps to, say,
mixed Hodge structures or compactly supported $\ell$-adic cohomology.
Zakharevich and\ Campbell have developed {a spectral refinement} of the
Grothendieck ring of varieties. We develop a realization map to Voevodsky mixed
motives, and this lifts the standard realizations of motives to this setting,
at least over perfect fields which have resolution of singularities.
