Does gas from cars cause lung cancer?

The short answer is No.

While certain chemicals found in gasoline emissions, such as benzene, are carcinogens, the concentration of these chemicals in ambient air is generally too low to pose a significant risk of lung cancer. Besides, the primary contributors to lung cancer are well-known: smoking and exposure to second-hand smoke.

However, it's worth noting that living in areas with high levels of traffic-related air pollution has been linked to an increased risk of respiratory problems, such as asthma and chronic bronchitis.