Auto repair shop acquisitions?

I have many questions about rolling up and operating auto repair businesses and hope to start a dialogue.

Has anyone had experience with this?

What did you like and dislike about the current marketplace? I'm interested in merging different shop cultures while maintaining service quality, avoiding common money and legal traps, keeping customers happy and retaining good employees, and using the best systems and tech to standardize operations and manage logistics.

How do you ensure compliance with environmental regulations, such as waste disposal and emissions, and deal with regulations when expanding to new areas?