Crystal Reports and Objects

I have an object called vehicle for talk sake and vehicle holds an ID for a customer

I then have an object called customer. which holds customers details

These are all in a project called project1 in visual studio 2005

I have another project project 2 with my forms etc and a crystal report.

This project has a reference to project1 however when in my crystal report is it possible for me to use the vehicle object and subsequent customer object as the source for the data and if so how is this done.If both points to same database then you can design the report having the data from those objects