Go excercise compare cars

compareCars.go

package main

import "fmt"

type CarSpecs struct {
    horsepower int
    torque     int
}

type Car struct {
    make           string
    model          string
    price          int
    specifications CarSpecs
}

func createCar(make, model string, price, horsepower, torque int) Car {
	_car := Car{}
	_carSpecs := CarSpecs{}
	_car.make, _car.model, _car.price = make, model, price
	_carSpecs.horsepower, _carSpecs.torque = horsepower, torque
	_car.specifications = _carSpecs
	return _car
}

func createCarsArray() []Car {
	var _cars []Car
	bmwM3 := createCar("BMW", "M3", 75000, 453, 410)
	supra := createCar("Toyota", "Supra", 50000, 335, 315)
	gsf := createCar("Lexus", "GS F", 85000, 467, 389)
	e63s := createCar("Mercedes", "E63s", 130000, 603, 627)
	_cars = append(_cars, bmwM3, supra, gsf, e63s)
	return _cars
}

func returnMostExpensiveCar(_carList []Car) Car {
	_expensiveCar := Car{}
	for _carIndex := range _carList {
		car := _carList[_carIndex]
		// check if empty struct
		if _expensiveCar == (Car{}) {
			_expensiveCar = car
		}
		if car.price > _expensiveCar.price {
			_expensiveCar = car
		}
	}
	return _expensiveCar
}

func returnCarWithMostHorsepower(_carList []Car) Car {
	_horsepowerCar := Car{}
	for _carIndex := range _carList {
		car := _carList[_carIndex]
		// check if empty struct
		if _horsepowerCar == (Car{}) {
			_horsepowerCar = car
		}
		if car.specifications.horsepower > _horsepowerCar.specifications.horsepower {
			_horsepowerCar = car
		}
	}
	return _horsepowerCar
}

func main() {
	cars := createCarsArray()
	expensiveCar := returnMostExpensiveCar(cars)
	mostHorsepowercar := returnCarWithMostHorsepower(cars)
	if expensiveCar == mostHorsepowercar {
		fmt.Println("This car is awesome! Buy this one: ", expensiveCar.make, expensiveCar.model)
	} else if expensiveCar != mostHorsepowercar {
		fmt.Println("Take your pick")
		fmt.Println("Most Horsepower: ", mostHorsepowercar.make, mostHorsepowercar.model)
		fmt.Println("Most Expensive: ", expensiveCar.make, expensiveCar.model)
	}
}