need help week 7 discussion question

Discuss one alternative to gasoline for automobiles and explain how it works.
Select an automobile model – on the market now – that uses the alternative fuel source you described above and give detailed information on the vehicle (including but not limited to who makes it, how much it costs, the mileage it gets, etc.)
Thinking about the auto model you chose above, would you buy one of these – why or why not?
Would you save gas (not money) if you drove the model you chose to investigate? If not, why not? Please show your calculations.
What changes would make these vehicles more popular?
Would you consider using public transportation or riding a bicycle instead of driving your current vehicle for at least some trips you make?