MARC has a pool of retired cars they have sent out to others before. They helped SEPTA during the Silverliner problem, they lease to the LIRR for summer surge, and have sent a few cars to AMTRAK. For whatever the reason, they are not used in MARC service, a question which somebody with a better knowledge of MARC hopefully can shed some light on. AFAIK they have 26 cars 15 coach and 11 cab cars. Last summer the LIRR took 8 and have options for up to 21 for the next 2 summers. A few cab cars were going to AMTRAK for the GCT diversion. Depending on how many the LIRR optioned for this summer, and when the 8 weeks starts, there is likely no impact to MARC riders since these are unused cars. It does bring in a good buck, though.