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contracts..._Structs.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

contract Structs {
    struct Car {
        string model;
        uint year;
        address owner;
    }

    Car public car;
    Car[] public cars;
    mapping(address => Car[]) public carsByOwner;

    function examples() external {
        Car memory toyota = Car("Toyota", 1988, msg.sender);
        Car memory lambo = Car({model: "Batman", year: 2019, owner: msg.sender});
        Car memory tesla;
        tesla.model = "Tesla";
        tesla.year = 2020;
        tesla.owner = msg.sender;

        cars.push(toyota);
        cars.push(lambo);
        cars.push(tesla);

        cars.push(Car("Ferrari", 2022, msg.sender));

        Car storage _car = cars[0];
        //update toyota
        _car.year = 1999;
        delete _car.owner;
    }
}