Originally Posted by
Telan Desaria
Courteous and oversimplfying as ever, Morgan; almost make me glad I returned. Almost
He's also completely right. He and I both know just a tiny bit on this subject, so pick your reply carefully and make sure you get your facts right.
The current weight of consumer vehicles is ridiculous when you consider the leaps and bounds that we've made with plastics, but essentially - looking at it from the point of view of a car manufacturer - they can either charge you a reasonable amount of money for a car that is heavy and has mediocre fuel efficiency, or they can charge you an outrageous amount of money for a car made of light materials that has excellent fuel efficiency.
Do you have any idea what goes into the design of a car? Light cars are bloody cheap to make - Tata in India and the Chinese prove it. Light, cheap because it's actually pretty simple to make a small light car with cheap steel and plastics.
And utterly bloody terrible in every way with absoutly NO crash compliance. Real car design is not cheap and nor is crash afety doable with cheap steels and plastics.
There are several reasons driving weight incars up and the first one is exactly as Morgan stated - crash safety has added upwards of 400 kg PER CAR in the last 20 years. You can not just use just any kind of material or aluminium for that kind of engineering, you need metals and structures that fold and bend in predictable ways, safety cells that will take a huge batterign before even looking like giving way, the simple air bag calls for motion sensors, accelerometers, certain designs of bumbers, reinforcements and protection from waht is basically a small bomb.
Next, demand for retarded garbage gzmos and simply unessary sound deadening. You can stack up 200 kg in this alone.
Third is simply the cars that the consumers demand. And this is the real killer - add in the crash safety, the BS gizmos and the fact light trucks seem to be regarded as necessary when clearly they are not, you have a disaster for any kind of light engineering and fuel economy. Size means weight and there can be no such thing as a light pickup or 4WD.
In Europe, they have a lot of smaller cars with diesels that get incredible economy. But that's because Eurpoeans arent car retarded and understand a small hatchback actually is a far better thing to drive about and also usually has much better engineering for crash safety. So the first step is not to make up l/100km laws, it's for US drivers to realise the cars they want are ridiculous for their real needs. And I add that these hatchbacks are well designed and usually quite affordible. Still quite a bit heavier than Tata's or Chinese cars but they dont fall apart in a crash. And they have dynamic safety in spades.
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