TRUCKIN UP TO BUFFALO: JULY 4 1989Among discerning Deadheads, 1989 is not generally considered one of the band's best years; in the wake of their massive success with 1987's IN THE DARK, torpor had begun to set in, and the band's legendary live sparks seemed more elusive. Nevertheless, the Dead were famed for the anything can happen ethos of their live shows, and it just so happened that on Independence Day of '89 they were undeniably on fire. Jerry Garcia is bursting with the energy