I use a map most of the time lol I keep an road atlas in my car.
But If i need a gps I have one, its a garmin.... uhhh 255? idk what it is. its a 4 year old gps. works decent. isnt always accurate though... I use it mostly as a mini portable map.
I also installed a 12v cigg plug on ym bike for just such cases as when i want to use my gps, or when i need to charge my cell phone.