Alternative fuels are perceived as being less likely to evaporate or otherwise find their way into the air before combustion and are less ozone-forming and less toxic if they do (Gushee, 1995). Another benefit that may be reaped from the use of alternative fuels is that gases burn cleaner than gasoline (see Table 6). As a result, less harmful emissions are created as a result of burning alternative fuels.
There are of course disadvantages to the use of alternative fuel driven cars. Vehicles that run on compressed natural gas will cost $2,500-5,000 more than a conventional car (Derr, 1994). Methanol does not offer convincing benefits over standard reformulated gasoline. Research shows that methanol does not offer any environmental benefits over reformulated gasoline and it is considerably more expensive