Throw a soggy cigar butt out the window of your car!
I've never tried any of the ferrocium rods, usually relying on a lighter, some matches in a waterproof container, and "heat tabs" (trioxane).
If you're going to use a flint and steel (I have done that, for fun), or a rod and striker, dryer lint makes a great starter along with some fine kindling (fuzz sticks, whatever).