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(Aside, the number of CSS issues I found while jumping through open-id sign-through is rather boggling for a theoretically mature service.)

I used to carry such a kit. The primary reason I don't right now is primarily due to laziness and lack of urgency to reassemble one. I simply don't travel enough anymore to feel the strong impulsion to fix it. I still carry warm weather gear and basic first aid though.

Things I'd add to your list:
- A maglite. There's nicer flashlights these days and brighter, but the old-style bulbs are still quite nice. Also, 4-D cells worth of flashlight (or 6 if you're aggressive) make a nice beating-stick or pry-rod.
- A reasonable coin assortment. Cash is obvious, but if you need coins for vending machines, pay phones or whatnot, it's very handy. A few rolls of quarters and one of dimes and one of nickels was always sufficient.
- A tarp. In a break-down, it's something to lay on to avoid getting your clothes dirty. It's also impromtu shelter combined with your paracord and some sort of clamps.
- In colder climes, a battery jump-pack. Jumper cables are only useful if there's someone around. (And speaking of jumper cables, they *can't* be too long. Ideally they're long enough to reach from your battery in the front of the car to behind the car behind you.) Newer packs can also service AC power or have built-in USB to go with the cell phone cable your previously mentioned.
- A full change of clothing, ideally loose. When you're soaked and it's cold, getting into warm dry clothing is critical. Loose because my emergency clothes didn't fit after ignoring for a year. :-)
- Wet wipes are handy for any number of purposes similar to your Gojo and several more. However, they have a tendency to dry out once opened. Replace from a sealed container once you open it unless you regularly use it.

And while I know this is primarily an emergency kit, pack for not-quite emergencies too. Toss some analgesics and some anti-diarrhea medicine in there too. Those reduce discomfort when things go awry and you're too far away from somewhere you can deal with things more gracefully. Don't forget benadryl or something else to deal with allergic reactions - someone else's even if not your own. Unfortunately epi-pens shouldn't be stored in such kits.