Fig. shows the probability density for the C-C bond stretching coordinate of the 1000-trajectory spin-LSC simulation of the fulvene molecule. The wavepacket oscillates, generating the CI at each maximal value of stretching. At long times, the wavepacket broadens slightly but not by an appreciable amount since the C-C bond is never broken. During the simulation, only two oscillations of this bond are allowed. Fig. show a single trajectory of the fulvene dynamics, showing (Fig. ) the energies of the S1 (red) and S0 (black) adiabatic states, (Fig. ) the population of the S1 state, (Fig. ) the real (black) and imaginary (red) parts of the coherence, and (Fig. ) the single-trajectory C-C bond stretching coordinate. The potential energy landscape through time is indicative of the prolonged nonadiabatic region analogous to the Tully model #3 and correlates with the extended C-C bond length occurring at 10 and 30 fs. The inset in Fig. shows the energy difference of the S1 and S0 states on a log scale.