You’re probably referring to gas stations that accomodate people going up to the mountains. Beineinu.org lists the following:
NEW JERSEY STATE
Route 17 North
1. Exxon
178 Rt. 17 North
Rochelle Park, NJ
2. Mobil
360 Rt. 17 North
Upper Saddle River, NJ
3. Valero (formerly Mobil)
193 Rt. 17 North
Mawah, NJ
(last Mobil before the thruway)
Route 17 South
1. International Motor Plaza
Truck Stop, Mawah, NJ
2. Valero (formerly Mobil)
(first Mobil after the Thruway)
198 Rt. 17 South
Mawah, NJ
3. Exxon
75 Rt. 17 south
Ramsey, NJ
4. Exxon On The Run
Ridgewood, NJ
Route 4 East
1. Exxon
120 Rt. 4 East
Engelwood, NJ
2. Exxon
484 Rt. 4 East
Engelwood, NJ
(last Exxon before the George Washington Bridge)
Route 4 West
1. Exxon
2338 Rt. 4 West
Ft. Lee, NJ
(first Exxon after the George Washington Bridge)
2. Exxon
119 Rt. 4 West
Engelwood, NJ
3. Lukoil (formerly Mobil)
20 Rt. 4 West
Hackensack, NJ
Palisades Parkway
1. Citgo Station
Between exits 4 & 5
NEW YORK STATE
Monroe
1. Exxon
Harriman, NY
At junction of NY Route 17, Route 6, & NYS Thruway
Monsey
1. Shell
Rt. 59 Between Robert Pitt Drive & Rt. 306
2. Getty On The Hill
Rt. 59 corner Remson Avenue
There used to be a gas station on the periphery of Crown Heights that had a little cafe with bourekas and all!
The Rio gas station on 38 Street in Borough Park may still have a deli.
In Monsey, there’s a gas station that seels Chaim Zieg’s famous heimishe chulent.
Something about getting chulent at a gas station is equally comical/ironic (think about how chulent affects the kishkes) and kind of disturbing. OTOH, what a testament to the vitality of suburban Americanized heimishe life in Monsey, that you have a glatt kosher gas station selling chulent, and even a 7-11 selling glatt kosher franks and other foods.