  We report on the observation of highly anisotropic viscous electronic
conducting phase in amorphous WO$_{1.55}$ films that occurs below a current
(I)- and frequency (f)- dependent temperature T*(I, f). At T < T*(I, f) the
rotational symmetry of randomly disordered electronic background is broken
leading to the appearance of mutually perpendicular metallic- and
insulating-like states. A rich dynamic behavior of the electronic matter
occurring at T < T*(I, f) provides evidence for an interplay between pinning
effects and electron-electron interactions. The results strongly suggest a
dynamic crystallization of the disordered electronic matter, viz. formation of
sliding Wigner crystal, as well as the occurrence of quantum smectic or stripe
phase in the pinning-dominated regime.
