If going solo, you can use all that horizontal free space to the right of you (passanger seat). One way to make the most of this space is to take a short but wide box or container or laundry basket and put the things you might want within your reach.
Think about the creature comforts of home that you cannot do without for a day-is it kleanex or a pen and paper to jot down a reminder, cell phone charger, snacks, plastic bag for trash, napkins.
DHS even has some thoughts on the subject on their web site www.ready.gov/car. While electronics are nice, a printed paper map is a good back up. If seasons are changing, toss in the ice scraper (because you know you will need it if you DO NOT have it).
If you get sleepy when you drive, dress in lightweight clothes so that you do not get warm in the car, especially if the sun is on your side of the car. If the weather is cold outside, simply place your jacket (and gloves) within reach for when you stop. Ipods, audible books, books on tape all can help keep your brain awake. Gum or sunflower seeds might be a good mental stimulation.
Make sure you have two credit cards in case there is difficulty with your primary card. Bring some cash to serve as a back up to both cards and for small purchases of snacks. Some quarters might come in handy if your low tire pressure alarm comes on at 4 a.m. Sunday morning in rural North Carolina in the rain when no gas stations are open.
Finally, here are the “obvious” things, but do one last check for them: GPS, water bottle, sun glasses, refillable coffee mug in case discounts for refills are offered. Feel free to text the owner when you depart your home for the condo, we’ll be interested when you arrive safely!