Introduction: In today’s environmental changes, global warming has affected us in multiple
ways. Cars and trucks have made global warming take a change. Cars and trucks are more fuel
efficient than we know it; they are interfering with the reducing of oil and fuel consumptions.
Are you one of those people that think that cars should be more efficient?
cost of gasoline they use more efficient cars then the United States. The United States has the
toughest emissions laws for vehicles. Resources have been shown that the auto industry has been
growing rapidly. But some now question how many cars the world can support. A driver in a car
that is able to carry 4 to 6 for a distance of 2 to 300 miles is not so efficient when we need only
commute 30 miles each day to work and back. When efficiency goes against personal choice and
space many would not choose efficiency. In our society where the personal car seems almost
equal to a personal freedom. In other societies mass transit is more efficient and considered the
way to commute.
Cars could always be more efficient. In some places like Europe with the high
The push for an efficient vehicle gets up whenever resources seem to be scarce and the
price goes higher but otherwise most people don’ t really care if they are wasting resources as
long it does not interfere with their lifestyle. Others might feel this kind of perspective is
shortsighted and will eventually lead to hardship. So from a macro point of view efficiency may
be desirable but from a personal point of view is less of a consideration. If the choice were made
to have a more efficient vehicle then the first observation is that the internal combustion engine
Should Cars be More Efficient?
is a “heat engine” and therefore subject to the laws of thermodynamics. In this case it says that
the efficiency of the vehicle is subject to the difference between the heat put in and the heat
The best answer to the efficiency question is to get away from the heat engine model. An
electric motor is around 95% efficient. Due to regenerative breaking and typically a more
aerodynamic shape the waste is less so that the final efficiency is around 80 to 90% and far more
than any heat engine can produce. Unfortunately for some our battery technology is still
advancing. The Toyota gets about 200 (plus more) miles on a charge. An Subaru will get over
100 miles to a charge as did the ev1 but many others will get less than 30 miles to a charge.
There are two solutions. The first is to attach an internal combustion engine powered generator
as a trailer when it is needed for longer trips. The second possibility is to have power transmitted
to the vehicle as we see with subways, high speed trains, commuter rail systems, trams. These
generally have either overhead wires or a third rail but another possibility is induction
transmission embedded in major roadways.
Conclusion: However, every decision I come up with come from the views I get on other
people’s opinions or decision, not saying I’d copy what they do, whichever choice has the most
followers, I’ll look into that direction. From what I see, we absolutely need to reduce our usage
of fossil fuels and eventually begin to eliminate it completely. Since vehicles contribute to a
large part of this usage, we need to make them more efficient so that they contribute less. True,
they should not be made any less safe than they currently are. However, I believe that we can
Should Cars be More Efficient?
make them more efficient without making them more dangerous, and would even go on to say
that we can make them safer and more efficient at the same time.