Elephants rarely attack unless it's to protect calf/calves.They do get irritated fairly fast though ...and there are Dos and Donts once you find an elephant standing on your way.
1.Switch of the engine.Do not rev the car to scare the animal.
2.Do not hoot.This is not your grandmother.
3.Do not make animated noise.
4.Do not flash lights and kindly be very patient.
Those tourists must have missed something up here.
Nothing great was ever achieved without enthusiasm.