get any 5 x 50 that you like. blow through it when you have to stop smoking.
when you are ready to start again, cut off the end and relight.
you are not really enjoying the cigar very much when you are in and out of the car, so any fairly decent cigar will work.
when you get home, throw the butt in a gallon jar almost full of water and sit down with a beer, drink, or what ever and enjoy a good cigar.
when the gallon jar (empty milk bottle) has a half dozen cigars and turns an ugly brown, use it as a bug killer around plants or put in in a sprayer and spray the leaves of anything that has bugs on them.