This app with only two buttons, Record and Find , will solve your headache.

1. Save the location of your parked car or your starting point.
Tap Record button, your parked car GPS location is saved automatically.
Close the map and exit FindMyCar app.

2. Find your car or your way back to where you started.
When you are ready to leave, tap Find button and navigate to your parked
car using Google Navigation Map.