With about 10 million vehicles running on CNG worldwide, it's easy to see why CNG has become the fastest growing alternative clean energy source in the world. SANERI and NGV Gas (Pty) Ltd are planning CNG demonstration stations across Gauteng and other strategic provinces to showcase the technology and promote CNG as a fuel source for the immediate future. These demonstration stations will be made available to interested parties who want to convert their vehicles to run on CNG.