Final answer:
The duration of coverage under the Mexico endorsement on a personal auto policy varies and must be confirmed with the policy terms or insurance provider, but a common option is for around 10 days.
Step-by-step explanation:
The question pertains to the duration of coverage under the Mexico endorsement of a personal auto policy. While the provided references, including '4.2: Mexico (2 Days)', are educational resources, they do not directly correlate with insurance policy terms. Policies often have different coverage limits based on the insurer. However, if a personal auto policy includes a Mexico endorsement, it typically outlines the specific number of days coverage is extended while the insured vehicle is in Mexico. It's not uncommon for policies to offer an option for a short trip of about 10 days; however, the exact terms would need to be verified within the actual policy documentation or by consulting the insurance provider.