The city finally filled a massive car-eating crater in Mayor Zohran Mamdani’s old Long Island City district in Queens — but it’s expanding faster than NYC’s budget deficit , and even causing accidents. The monster pothole emerged as a mere depression nearly a month ago, smack in the middle of a two-lane, one-way, westbound strip along 41st Avenue between 23rd and 24th streets. But it grew to be a hazardous hole — roughly 6-feet-long, 5-feet-wide and nearly 30 inches deep — when The Post measured it on April 22. City crews filled the hellhole two days later, but neighborhood residents said the asphalt patchwork started sinking within hours. New York Post reporter Rich Calder stands inside a massive pothole on 41st Avenue in Long Island City, Queens, on April 22 that has local residents peeved. Even after city workers patched it up, it is still sinking. J.C.…