They add different things to the car so that they can make the cars faster so they can go onto the market they also make the car more expensive so they can make more money. Don't know if that helps but there.
Answer:
A farmer would chose a luxury crop over a high caloric or nutritionally valued crop because a luxury crop would generate them more profit.
These are non-subsistence crops, ones that are not necessary to survive and be healthy, but luxury goods like the name implies. People are willing to pay more for them for this reason.
Answer:
Yes it is used in Canada I can help you with that's the other part I'm not sure.
Cultural environment, hope this helps ;)
