mutate rust struct

gistfile1.txt

#![allow(dead_code)]
struct Car {
    name: String,
    seats: i32,
    speed: i32,
}

impl Car {
    fn drive(&self) {
        println!("{name} drives at speed: {speed} km/h", speed = self.speed, name = self.name);
    }
    fn build(name: String, seats: i32, speed: i32) ->  Car {
        Car {
            name : name,
            seats : seats,
            speed : speed
        }
    }
    fn change_speed(&mut self, speed: i32) {
        self.speed = speed;
    }

    fn change_car(&mut self, name: String) {
        self.name = name;
    }
}

fn main() {
    let mut car = Car::build("Porche".to_string(), 2, 200);
    car.drive();
    car.change_speed(120);
    car.change_car("Lada".to_string());
    car.drive();
}