An impact model of the electrostatic force: Coulomb's law re-visited
  The electrostatic force is described in this model by the action of electric dipole distributions on charged particles. The individual hypothetical dipoles are propagating at the speed of light in vacuum transferring momentum and energy between charges through interactions on a local basis. The model is constructed in analogy to an impact model describing the gravitational forces. 
K. Wilhelm, B.N. Dwivedi, H. Wilhelm
physics.gen-ph