  We numerically study string production by evolving classical Abelian-Higgs
gauge field wavepackets. Initial conditions are constructed for the propagation
of a single wavepacket and for the collision of two wavepackets. We identify
regions of parameter space that lead to prompt production of strings from a
single wavepacket. The collision of two sub-critical wavepackets can also lead
to the production of strings in certain regions of parameter space.
