Living Green - Episode 172 - Eco Tourism

The video discusses a green awareness tour from California to Costa Rica using a 1970s school bus. The bus, running on vegetable and avocado oil, promotes ecological awareness and sustainable living. The ecologists filter the oil, believing it to be a cleaner alternative to conventional fuels.

In what regions did the bus travel to promote ecological awareness?

What is the belief of the ecologists regarding the fuel they used compared to average vehicle fuel?