Biofuel startup LS9 has been sold for $40 million to biodiesel maker Renewable Energy Group, reports MIT Tech Review. But before you congratulate them, note that LS9 raised $81 million over nine years, and still hadn’t reached a point where it was selling its green diesel to refiners. Last year the company brought in a new CEO, following restructuring and layoffs. Such are the long roads and harsh conditions facing biofuel startups. LS9 was backed by Khosla Ventures, Flagship Ventures, Lightspeed Ventures, and Chevron Technology Ventures.