The book progresses from characterizing road-related pollution to evaluating different filter types and air purification technologies, using scientific studies and field tests. It critically assesses the claims made by manufacturers of aftermarket filters, often revealing discrepancies between advertised and real-world performance. For example, while many filters claim to remove volatile organic compounds, their actual efficacy can vary significantly.
Ultimately, this book equips readers with the knowledge to maintain optimal in-cabin air quality through ventilation system management and filter replacement.