In the 1970s, the Organization of Petroleum Exporting Countries (OPEC) tripled the price of petroleum, causing automobile manufacturers to look for ways to produce more fuel-efficient cars by substituting aluminum and plastic for steel. This was primarily a response to the economic question of

incrase in the input prices

Explanation:

In the short-run the cars manufactured couldn't respond in other way than increasing their prices.

But, in the long-run as all facotr are variable, the car industry thrive to make more efficient milles per gallon engines, decrease the car weight and give more aerodynamics as well. All this makes the petroleum needs decrease to adjust forthe increase in price.

it's actually a very difficult task, due to not many people can make 2 million dollars in 2 years. besides that, to the not-so-realistic ideas, you can create a business. it could be practically anything, but make it into a business that isn't that known yet, you get me? also, lets not forget about stock market. that's where all the good stuff happens. use investments at the beginning and begin to raise up your business or whatever you're going to do. as this is a very non-realistic idea, it's still worth the shot!

answer; sensory adaptation;