Introduction: In today’s environmental changes, global warming has affected us in multiple ways. Cars and trucks have made global warming take a change.

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?

Body:

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

output.

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.

Leave a Reply