The cars were in a parking lot behind the Parker-Waichman law office building lot at the time the land burst through a retaining wall at 11:30 p.m. The muddy mess stopped just short of the law firm's building.
"It's quite steep ? this is a scary situation," said attorney Gary Falkowitz.
The fire department called just to make sure no one was trapped in the mud. No injuries were reported.
"We dug, we also checked the security cameras inside the building," said Roslyn Assistant Fire Chief Mike Gannon, "we didn't see anything that should alarm us."
The heavy downpour wreaked havoc all over the area Wednesday night. Storm drains could not keep up, making for a complicated morning commute for both people and responding crews.
In Herricks, a man's basement turned into a swimming pool. He says he tried calling 911, but no one could help him.