Yellow Checker Star Transportation had been using propane autogas for its entire vehicle fleet for more than 30 years because of its low fuel and maintenance costs. But in 2016, the fleet owners wanted to cut fuel costs even more, without sacrificing the optimum performance they experienced with propane autogas. The fleet owners soon began experimenting with propane autogas-hybrid technology, and today one-third of their 860 vehicle fleet operates as hybrid taxis. Click here to watch the video.