ah - every smoker's nightmare (and most modern cars don't have an actual lighter fitted). Anyway, break the rules and ask a passer by or as mentioned you must have some form of cooker. Many a time I've used paper on an electric ring to light a ciggy.
PS most lost lighters are in pockets, under car seats or down the back of sofas.
Get yourself a battery there’s always old ones in the bottom of a draw. 2 short lengths of electrical wire hold the stripped end of one on the battery bottom the other hold it on the top terminal strike the other ends together to make a spark.
By the time you’ve done that you will have given up.