For World Car Free Day, MTA is giving away 6 free one-way MARC train passes (as well as 3 free BaltimoreLink passes)! All you have to do is make an account with the Charmpass app on Android or Apple and fill out the form at the bottom of this link to redeem your passes. The redeemed tickets are good for one year (through September 2022, and the offer ends Friday, September 24th at 11:59 PM so be sure to get them as soon as possible.