Look up "Portal" in Filemaker's Help system.
You can display a list of related "car" records in this portal to link any number of such records to a given club member.
You can now create your report layout based on the Cars table but still add fields from your Contacts table to display member name, address, etc. Check out SubSummary reports for how to do this kind of report.
PS. You can do this in Access also--it's called a SubForm in MS Access systems.