What you're looking at is the deck of the U.S.S. Ronald Reagan covered in the vehicles of Navy Sailors heading to Naval Base Kitsap in Bremerton, Washington. At a cost of about $4.5 billion this is probably the world's most expensive parking lot.
It may seem phenomenal, but this is actually a common occurrence for the Navy and a lot cheaper and easier than transporting the vehicles almost any other way. The weight of one E-2C Hawkeye is approximately 43,000 pounds, or about 12 cars, and a Nimitz-class carrier usually carries four of those.