My auto insurance recommends taking out a policy with a liabilitylimit of at least my net worth.
This is a bizarre recommendation for an auto policy. Maybe they are talking about an umbrella policy.
E.g. here's a Geico explainer of umbrella policies:
GEICO requires a minimum bodily injury limit of $300,000/$300,000 anda property damage limit of $100,000 or $250,000/$500,000 and aproperty damage limit of $100,000 on your auto policy to qualify foran umbrella policy. Homeowners/Renters Personal Liability coverage of$300,000 is also required.