You raise a good point and I discovered that whilst I was researching. Yes, this does take up land usage and there has been a bit a dispute over land for farming and land for biofuels. However, there are three things that can help eliminate this problem: 1. switchgrass grows quickly and effiently, more so than corn and the amount per acre used is greater than that of corn. 2. the Zymitis Process uses the whole plant not just parts so the amount per acre again increases, instead of 6 (approx.) tons per acre, you get 10 tons per acre. So there is more of an output. And 3. cellulosic ethanol can be produced from waste products from landfills and such, so that doesn't take up any land usage for farming. However, one cannot just achieve this goal by following one of these, but maybe a combo of them.... I should probably put this in my report..