What should President Trump do about regulations for new automobiles?

What should President Trump do about regulations for new automobiles?
Make regulations even more stringent. I can't afford one anyway.
Do nothing with regulations. Cars are too expensive already.
Revise regulations to 2015 levels
Revise regulations to 2005 levels.
Revise regulations to 1995 levels.
Revise regulations to 1983 levels
Revise regulations to 1970 levels
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What should President Trump do about regulations for new automobiles?
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