MLS says that most attendees arriving by car are expected to use existing parking at Citi Field, an arrangement that’s likely subject to negotiation with Mets ownership. One potential problem Finn identified with this plan is double-booking Citi Field parking lots and overloading the 7 train, since soccer and baseball seasons occur at the same time of year.
Citi Field parking is up to three-quarters of a mile away from the proposed MLS site. The league says shuttle service to the subway or Citi Field parking lots is not currently part of its transportation plan, though community activists including Finn say MLS has told them otherwise.
via How Will Soccer Fans Get to Proposed MLS Stadium in Queens? | Streetsblog New York City.