Clear Dash Cam Audio

I need help improving the audio quality of a dash cam recording. The main issue is background noise, which makes it hard to hear the speaking voice.

Requirements:
- Reduce background noise significantly
- Maintain the clarity of the speaking voice

Ideal Skills:
- Experience with audio editing software
- Proven track record in noise reduction
- Ability to work with car dash cam audio formats

Please ensure the final output is clear and the voice is easily understandable.