[azm1]

If you would think of all humankind + planet as one entity, then you would deduce that it does not make sense to create such redundant engines because for you as a one cell it can be enjoyable and cool but for the cell next to you its actually damaging. So its a zero sum game. You should think of others and always ask yourself if your actions does not harm others or at least try to reduce the harm if possible. So yes, I would say the more power, the greater moral responsibility for the future of our species. For sure.

Once you are great mind and able to design modern engines for super cars then I would say you could do many other 'jobs' which would probably benefit us all more than making strong cars.

BTW I like fast cars myself. My conclusion is rather utopian. If you feel like you should do something more beneficial in position of such person who makes engines, maybe you could consider finding another job. But can you generalize that to all? Probably not..