  We perform a numerical simulation of the evolution of inhomogeneities with
transverse profile in a collision of gravitational shockwaves in asymptotically
anti-de Sitter spacetime. This constitutes a step closer towards an accurate
holographic description of the thermalization of a strongly coupled plasma,
which can model the dynamics of heavy ion collisions. The results indicate that
the considered inhomogeneities typically become hydrodynamical earlier or at
the same moment when hydrodynamics applies to the background, even though they
decay slowly.
