Rick Impallaria from the Maryland House of Delegates introduced the bill on February 12, and the Maryland Automobile Dealers Association and Washington Metropolitan Auto Body Association have already voiced support for the idea, according to Automotive News. There's no guarantee the proposal becomes a law, though. It still needs to pass a vote in the House of Delegates, which the legislature hasn't scheduled yet. Then, the bill has to progress through the State Senate and eventually get a signature from the governor.
There is some dissent over the bill. According to Automotive News, the Automotive Body Parts Association believes the law would take about consumer choice and raise insurance rates. "Bill 1258 is only good for the car companies, giving them a virtual monopoly on parts for the first two years of the vehicle's life," it said in a statement.
If you want to make your own decision about the bill, you can find its full text and a policy analysis on the General Assembly's website. The page also lets you follow along and see if this ever becomes a law there.