The Cassini mission yielded a treasure trove of information on Saturn's
largest moon Titan. With many flybys of this complex moon Cassini
revealed many aspects of Titan's upper atmosphere and interaction with
Saturn's magnetosphere. In many ways Cassini revealed that this moon is
unique in that it sustains a dense atmosphere and ionosphere even
without the protection of an internal magnetic field. Key to the
understanding of this ionosphere is understanding the ion dynamics of
Titan's upper atmosphere, namely how these ions are created and lost
either to the lower atmosphere where they fall and can contribute to the
creation of the complex hydrocarbons seen at the surface or are carried
away with Saturn's rapidly flowing magnetospheric particles. Here we
present novel measurements of the velocities of many ion species in
Titan's upper atmosphere. We show that multiple processes must be
responsible for the acceleration of these ions as there is evidence for
both mass dependent and independent acceleration. We also show that
heavy, relatively complex molecular ions are accelerated and carried
into the magnetospheric flow. These ions could contribute to mass
loading processes and possibly additional changes in the magnetosphere
when Titan resides in Saturn's magnetotail.