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We should also note that biofuels have a tendency to go through hype followed by reality check cycles. In early 2000s VC Vinod Khosla was a big supporter for biofuels. See below Google Bard answer on what happened to that particular hype wave.

” why did vinod khosla support biofuels and later did not?

Vinod Khosla was a big supporter of biofuels in the early 2000s. He invested hundreds of millions of dollars in biofuel companies, and he was optimistic about their potential to replace gasoline. However, his enthusiasm for biofuels waned in the later 2000s and early 2010s, as a number of factors led to the failure of many biofuel companies.

Some of the reasons why Khosla and others became disillusioned with biofuels include:

• The high cost of producing biofuels. Biofuels are often more expensive to produce than gasoline, and this makes them less competitive in the marketplace.
• The environmental impact of biofuels. Some biofuels, such as corn ethanol, can actually contribute to greenhouse gas emissions.
• The competition from other clean energy technologies. Solar and wind power have become increasingly cost-competitive with fossil fuels, and they are seen as more environmentally friendly than biofuels.

As a result of these factors, Khosla has now shifted his focus to other clean energy technologies, such as solar and wind power. He still believes that biofuels have the potential to be a viable alternative to gasoline, but he believes that more research and development is needed before they can be widely adopted.

In a 2014 interview, Khosla said, “I’m still a big believer in biofuels, but I think we need to be more patient. It’s going to take a while for the technology to mature and for the economics to work out.”

It remains to be seen whether biofuels will ever become a major player in the energy market. However, Khosla’s experience is a reminder that even the most promising technologies can face challenges and setbacks.”