I do these activities with students to prepare for their "My First Car Project." You can also find the "My First Car Project" available for sale in my TpT store as well. To view the project Click Here
There are two free videos online that do a great job explaining all the big concepts and factors that go into purchasing a car. The videos are linked to the documents. These documents are guided notes to engage students with the videos and foster rich educational discussions afterwards.
Students also use these notes to help create their project and make their own decisions of what type of theoretical car to purchase.