Sorry to be a downer but my choice is Driving.

Thanks for the inclusion but I'm confused by you saying I was almost right but assumed they run the carriers flat-out.

The carrier gets a lot less efficient near its top speed. I would go with its crusing speed of 20 knots (23mph).

Let's [very generously] assume that it can operate 8 months of the year at its cruising speed of 20 knots, that would have the ship cover 116,800 nautical miles or 134,413 miles. From the data provided by CornholioDC, Operating costs are $160 million and support costs are $298 million per year (I'm going to leave out…

A Nimitz-class nuclear powered aircraft carrier. With 5000 crew to feed and pay, jet fuel for all the aircraft, munitions and nuclear fuel, I think that about tops it.

Oh, definitely. There are some cars where you have to take apart half the dash to get to it which is just a ridiculous pain in the ass. My suggestion applies to cars that have had some semblance of thought put into the location of their cabin air filter.

Cabin air filter.

So a clever bro in Massachusetts could just buy a 2WD truck and lift it to his heart's content?

Are you at all phased by the possibility of low-flying pelicans distracting you from staying on course?

Depends on where you are talking. In North America, it is likely the Smart ForTwo.

Honourable mention to the Polizei.

I'd say the guys running this for Italian police have a pretty good gig.

North - South Korea