What is the make and model of the tour vehicles in "Jurassic Park" (1990)?

The story behind the answer

In Michael Crichton’s 1990 novel Jurassic Park, the tour cars are modified 1989 Toyota Land Cruisers that run automatically along a guided track—so the Toyota Land Cruiser is correct. The Jeeps are staff vehicles in the book, the Ford Explorers are a change made for Spielberg’s 1993 film, and the Mercedes M-Class doesn’t appear until The Lost World movie.

Crichton chose Land Cruisers for their reputation for rugged reliability—fitting for Isla Nublar’s rough terrain—and to underscore the park’s reliance on automation and control systems. Memory tip: Book = Toyota Land Cruisers (Two-ota on a track); Movie = Ford Explorers for tours, Jeeps for staff. Think “Land Cruiser for the land of dinosaurs” to keep the novel’s choice straight.