When the T-Rex is chasing the Jeep just after Ian is picked up, there is a shot of the Rex in the driver's side mirror. The mirror reads "Objects in the mirror may be closer than they appear" BUT- that phrase only appears on the passenger side! The reason is that the passenger side mirror is farther away from the driver and is slighlty convex to give a wider field of vision. By US law, the driver side mirror must refract an image that the driver can safely judge distance accurately from. Thus, this phrase doesn't appear there.