https://consumerist.com/2017/10/30/maryland-to-try-sending-recall-notices-with-car-registration-renewals/

Your state’s department of motor vehicles already knows what make and model of car you own, and sends you registration documents every few years that you have to open. Safety advocates have suggested including information about important vehicle recalls in vehicle registrations to make sure more people know about recalls and comply. In an experimental program, Maryland will start sending these notices to vehicle owners.

Recalls can endanger the lives of drivers and passengers, like the notable recent recalls of shrapnel-spewing Takata airbags, or the General Motors ignition lock defect. Yet only around 70% of recalled vehicles get repaired, a figure that the National Highway Traffic Safety Administration wants to improve.