  The field of a moving pointlike charge is determined in nonlinear local
electrodynamics. As a model Lagrangian for the latter we take the one whose
nonlinearity is the Euler-Heisenberg Lagrangian of quantum electrodynamics
truncated at the leading term of its expansion in powers of the first field
invariant. The total energy of the field produced by a point charge is finite
in that model; thereby its field configuration is a soliton. We define a finite
energy-momentum vector of this field configuration to demonstrate that its
components satisfy the standard mechanical relation characteristic of a free
moving massive particle.
