Kirk McDonald said in his paper "Maxwell’s Objection to Lorenz’ Retarded Potentials" ( http://www.physics.princeton.edu/~mcdonald/examples/maxwell.pdf ) that (about Lorenz's concept of retarded potentials),
Maxwell made an objection  (p. 651) that if a pair of equal and opposite charges move collinearly, then the retarded potential experienced by the charge in front has smaller magnitude than that experienced by the charge in the rear because the former retarded distance is larger than the latter; hence, there must be a net electrical force on the system, which accelerates it without limit, providing an infinite source of free energy.
He also said Maxwell's objection was based on a misunderstanding, and the issue was avoided by using Lorentz transformation. I ask here whether this paradox has a name, and if so, what is it? I ask because I try to find papers about it. A name will greatly facilitate the search.