Okay what would be so incredibly perfect for this idea would be the Cantilevered Coaster, http://www.cantileveredcoaster.com/
The park would have the first ever, a prototype, get TONS of press, and the ride:
It starts like the normal jeep ride idea, you're on the road just like in the first movie, but when the storm comes and the dinosaurs get loose, the car jumps off the track and this way it can get blasted or go down hills, and "jump canyons" and even go off little jumps and hop over logs in your path and because of the hidden track system underneath, it would actually feel like you're in a runaway jeep. Of course, the amount of money and land for something like this would be mind-boggling, but if anyone could pull a ride like that off, it is definitely Universal.