There are plenty of mobile apps developed for car owners for various functions, take a look at the Top 10 Must Have Mobile Apps for Car and choose which is the best for you.
1. Google Maps:
Google Maps for Mobile offers a location service for motorists that utilises the Global Positioning System (GPS) location of the mobile device (if available) along with data from wireless and cellular networks. A route planner offers directions for drivers to take a trip from one specific location to another.
In addition to conventional road maps, Google Maps offers aerial and satellite views of many places. In some cities, Google Maps offers street views comprising photographs taken from vehicles.