I drive a 2015 Chevy Malibu, with about 100k miles (mostly highway miles). Usually, my family rents a car to “save miles” and “protect our car”. I’m leaning towards driving my own car to save money. Is there any reason why I shouldn’t do this, as in it would greatly decrease the longevity of my car?

Can anyone give me a summary of what I should get done to my car before taking the trip? I don’t really do much beyond routine oil changes and getting my tires changed every few years. Winter weather is a concern. Thanks!