Today, there are vehicles that run on vegetable oil. I believe this is convenient because it doesn't cause pollution and it is easier to get than having to go to the gas station. I believe that vegetable oil should be used for more machines used around the world. for example, some factory's use machines that require gasoline, this should be turned to using vegetable oil. I believe that all cars should run on vegetable oil and not gasoline. especially that gasoline prices are going up. we need to take extreme measures here in America, and this pollution needs to stop, before its to late.