In a theory where a global breaking of supersymmetry (F-type) occurs at
a scale f, I discuss dynamical breaking of local supersymmetry
(supergravity) without invoking other matter fields except condensates
of gravitinos, formed dynamically. The goldstino associated with the
global SUSY breaking is absorbed by the gravitino, the SUSY partner of
graviton, which thus becomes massive via the formation of condensates at
the non-trivial minima of the (one-loop) effective potential. The
gravitons remain exactly massless, and thus local supersymmetry breaks
dynamically. Such processes in the early Universe may lead to inflation,
which for conformal supergravity models fits the Planck data
excellently. The inflaton in this minimal scenario is associated with
the massive gravitino condensate field.