What happens next in this paragraph?

How to sleep in your car on a road trip
Bring comfortable bedding.
Whether you're parking for the night or taking a couple hours' snooze break while your friend drives, you'll need to make up for the car's environment. While not impossible to sleep in cars as-is, it can be uncomfortable.
Choose from:
(I) Make sure you don't end up as a backseat passenger. Make sure your bed is at a comfortable height.
(II) You'll probably bring a bit more if you plan to sleep overnight and not just during the drive. Must-haves are pillows and blankets, or a sleeping bag if you are traveling through regions with cold temperatures.
(III) Before you reach for your ipod or tablet, check the amenities and warmth preferences page or any other amenities available on your car. Gather your bag and sit in the car for a few minutes.
(IV) If you've built up a valuable car fully equipped, you won't have to buy it anymore when you park your car. When travelling with friends in a car, warm up a short microwave.
(II)