so after driving my car, like on the freeway, when I get to where I am going and park, turn off the car...there is always a ticking, crackling, clanging noise. Even like say I drive 70/75 mph on freeway for 30 min or more... when I exit the freeway and say pull over in a parking lot, when I hop outta the car and the car is still running, I open my car door and lean down and and just listen, its coming from under the body of the car, the carriage. its loud too!! I guess I'll take it to the dealership as I have other friends w newer model Infinitys and none of their cars do this...at least I still have a warranty!! just wondering if anyone else has heard this type of noise?? I filmed it on video on my iphone so when I get to the svc dept they can see and hear it.

Expansion and contraction of aluminum parts upon heating and cooling off.