No airport security, ziplock baggies, weight limits, luggage fees or tickets. Just open road and 3 kids. Nirvana, right? First things first: pack the car. When this BMW X5 was delivered to me to test on this road trip, the team reviewed all of the car’s features. Some that are outstanding: it takes diesel fuel, getting into park, reverse or drive requires some getting used to, and in the event of a huge decline, the car can drive itself. More on that later. First, let’s check out the trunk.