Quarkonium data suggest an enhancement of the hadroproduction rate from
interactions of the heavy quark pair with a comoving color field generated in
the hard gg -> Q\bar{Q} subprocess. We review the motivations and principal
consequences of this comover enhancement scenario (CES).Comment: 7 pages, 1 eps figure, to appear in the proceedings of the CERN
2001-2002 workshop `Hard Probes in Heavy Ion Collisions at the LHC
