A Jeep was a small but powerful type of general-purpose automobile originally built for and used by the US Army during World War II. They were eventually redesigned for civilian use.
General Rex Denning traveled around the Army base that he was stationed at in 1947 in a Jeep. (DS9: "Little Green Men")
Maury Ginsberg owned a Jeep in 1969, which he used to travel to Woodstock. (VOY: "Death Wish")
A Jeep was parked on Carpenter Street near the abandoned American Wrecking Company in 2004. (ENT: "Carpenter Street")