Because of ww2 not many people could afford cars so and any automotive were halted and the only people who were buying cars was the government
The Black Power movement led by Malcom X had ideas similar to King's movement, being that they both wanted rights for African-Americans, but the way they protested is where they differed. Malcom X criticized MLK's method of peaceful protest, and took to having a more radical and violent way of protest and fighting back against oppression. I hope this helps :)
Because they believed that big businesses are the ones that causes large economic growth in the U.S.