India has a history of jugaad, and retrofitting vehicles is one such manifestation of the legendary Indian skill. Not so long ago autorickshaws and small Marutis used to strap on subsidised LPG cylinders and power themselves to a cheap ride. There were the odd explosions, lives were lost, but the jugaad continued. Then compressed natural gas (CNG) was introduced in Delhi following a court order. Initially, customised CNG kits were fitted to conventional (internal combustion engine or ICE) autos cheaply, enabling commuting at less than half of what you would cough up for diesel. The industry is better organised now