Very little or a lot, depending on your perspective. Long term investments look at strong projections and long term development, not in a single technology with high risk. But projects like the one you refer to is certainly proof of a strong and competitive R&D capability, which is something to invest in.
Buffett usually doesn't care about stuff like this. He cares about profitable business models that throw off a lot of cash in dividends. He uses those to make big infrastructure investments for long term continuous cash (like utilities). His letters to shareholders lay out his strategy in very plain language.