In the long term, the positive impact of bio fuel use on the environment in terms of reduced harmful emissions far outweighs the impact it may have on a portion of the population who owns vehicles that might be adversely affected. Let's not forget that our vehicles burn fuel, and each time we drive, we contribute to polluting the environment. By reducing our carbon footprint we're decreasing the risk of ill-effects to millions of other non-car owning Filipinos.
Add to that the beneficial effect to our agricultural sector. Let's not forget that ethanol is derived from crops like corn which we grow locally. Contrast this to petroleum which we import, a burden that contributes to the depletion of our country's limited dollar reserves.