Bluetooth Car Audio Integration

I'm looking for an experienced developer to integrate Bluetooth connectivity between my smartphone and car audio system. This should allow me to control navigation maps and display them on my car's display.

Key Requirements:
- Connect smartphone to car audio via Bluetooth
- Allow control of navigation maps
- Display maps on car's audio display

Ideal Skills & Experience:
- Expertise in automotive audio systems
- Strong knowledge of Bluetooth technologies
- Experience with smartphone integration and navigation systems