  The dynamics of highly excited radial Rydberg wavepackets is analyzed in
terms of de Broglie-Bohm (BB) trajectories. Although the wavepacket evolves
along classical motion, the computed BB trajectories are markedly different
from the classical dynamics: in particular none of the trajectories initially
near the atomic core reach the outer turning point where the wavepacket
localizes periodically. The reasons for this behavior, that we suggest to be
generic for trajectory-based hidden variable theories, are discussed.
