HOW CAN I GET THE COMPASS IN MY CAR?
I'd purchase a Garmin nuvi GPS unit, you get those for around $100 and mount it on the dash or windshield. they have a built in compass and directions.
http://www.amazon.com/Garmin-Navigator-Directions-Preloaded- Displays/dp/B00HEGP40E/ref=sr_1_2?ie=UTF8&qid=1439415494&sr=8- 2&keywords=garmin+nuvi
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