Abandoned Trackways near Sunnyside Yard

Throughtout the years, I've noticed some old abandoned trackways located in a parking lot in front of the shopping center that has stores such as the Stop & Shop and the Guitar Center on 48th street in Long Island City in Queens.

These pictures are from Google Maps. The first one shows the parking lot in front of the shopping center on 48th Street, with the abandoned tracks seen on the lower right.

https://www.google.com/maps/@40.751336,-73.915168,3a,22y,254.83h,76.21t/data=!3m4!1e1!3m2!1s6_51sHHSi5vE76mroeNE_A!2e0

Passing by warehouses on 37th Avenue and onto 43th Street, there is an unused grade crossing. The tracks here has been paved, but west of here, there is an unpaved track that leads into Sunnyside Yards.

https://www.google.com/maps/@40.751363,-73.920077,3a,75y,338.01h,85.77t/data=!3m4!1e1!3m2!1saX117GgeCBhFXafhUQnuDA!2e0

https://www.google.com/maps/@40.751627,-73.920493,3a,75y,2.11h,77.27t/data=!3m4!1e1!3m2!1sqw9sw_dfwOj6a2sHpzkXQA!2e0

https://www.google.com/maps/@40.751722,-73.920645,3a,15y,262.94h,85.16t/data=!3m4!1e1!3m2!1sioM6kC_J6amaa3mt4_BWBA!2e0

My question is, what trains used to run on those tracks?