Introduction to the Local Interconnect Network (LIN)

The Local Interconnect Network (LIN) was developed as a complementally bus standard to the Controller Area Network (CAN bus) to address the need for a cost-efficient network for lower performance devices within the vehicle. While the CAN network was already in place within vehicles, its high bandwidth and advanced error detection capabilities were overkill (and thus, cost-prohibitive) for lower performance applications such as seat and window controllers.

Read more at http://community.nxp.com/LIN