This isn't a few thousand jobs, auto manufacturing in the u.s. employs millions and millions more work in services or industries dependent on it.

Also union auto jobs keep wages high for other unskilled labor as it puts upward pressure on employers as they compete for workers, eg. Amazon may have to increase wages to compete with a unionized auto plant that got a raise with the recent negotiation, otherwise people might choose to work there. If that auto plant goes under though, or moves over to China, then there's a surplus of workers who need a job so amazon can lower wages cause they know they're desperate, this is how the middle class collapses.

Globalization encourages a race to the bottom for wages which hurts workers. That's why free trade deals like NAFTA/USMCA will have minimum wages put on auto manufacturing, and why it's better for cars to be manufactured in Mexico then in China, where no such minimum wage exists. Chinese cars aren't cheaper because their manufacturers are more efficient, its because their workers are more exploited.

We do need to transition away from gas cars, ideally to public transit, but absent that we can encourage EV adoption with subsidies and discourage gas car purchases with taxes without destroying the middle class.