Two of the Jeeps arrive to pick up John Hammond's party from the helipad after their arrival. Alan Grant, Ellie Sattler and Ian Malcolm are chauffeured in Jeep 18, Hammond and Donald Gennaro in Jeep 29. When he steals the dinosaur embryos, Dennis Nedry takes Jeep 12. Ellie and Robert Muldoon use Jeep 10 to both rescue Ian Malcolm and make a daring escape from Tyrannosaurus rex. Jeep 10 is also later used by Hammond to pick up Grant, Ellie and his grandchildren Tim and Lex from the visitor's center to drive them to helipad.