Report Builder 602/604 consolidating pick list choices into a summary.

Hello all,

If I have a field called Part, and the choices are:

Car - door (5 Work Items)
Car - seat (5 WIs)
Car - tire (5 WIs)
Truck - door (5 WIs)
Truck - tire (5 WIs)
Truck - seat (5 WIs)

and I want to create a report that shows:

                       High                Medium              Low            Total
Car                   3                        4                      8                15
Truck                2                        8                      5                15
Total                 5                       12                    13               30

Can I do this in 602 (I'll settle for 604 as we may soon upgrade). I can do a dashboard widget with each, but combining and separating the values seems to take it to Report Builder.

thanks for any assistance