Many Houston-area vehicle fleets are converting to clean propane autogas to help reduce pollution and contribute to cleaner air a significant concern for Houston, which was recently listed the seventh smoggiest U.S. city by the American Lung Association. Houston-area propane autogas fleets include Humble, Splendora and Conroe Independent School Districts (ISD) as well [...]The Article Houston Fleets Switch to Propane Autogas to Improve Air Quality appeared first on Automotive Digest.