A different interpretation of "Measuring propagation speed of Coulomb   fields" by R. de Sangro, G. Finocchiaro, P. Patteri, M. Piccolo, G. Pizzella
  We claim that the anti-relativistic statement in de Sangro et al., Eur. Phys. J. C 75, 137 (2015) that the Coulomb field of a moving charge propagates rigidly with it, cannot as a matter of fact be inferred from the measurements reported in that reference. Registered is not the passing of the Coulomb disk, but the acceleration-dependent part of the Lienard-Wiechert field. 
Anatoly Shabad
gr-qc hep-ph