Vehicles emit around 24 pounds of CO2 and other global warming gases for every gallon of gas used, contributing to dangerous global levels of CO2. Riversimple, a sustainable car company with the purpose of working to systematically eliminate the environmental impact of personal transport, believes that "less unsustainable is still not sustainable." Currently, they are developing hydrogen fuel cell cars and, more importantly, the strategies for bringing them to market. Riversimple’s car, the Rasa, was designed from the ground up and is three times as efficient as any other car on the road, emitting only water. It is supplied as a fully inclusive service—meaning insurance and fuel are included with driving—making it the first eco-car available at no cost premium. In 2017, Riversimple secured a €2 million grant towards a 20 car market trial.