Dear team,

Requesting your constructive criticism of my solution to Checkpoint 6. I had abandoned the program a few months ago; I've returned to start from the beginning, and here is where I last left off. My knowledge is limited to Day 11.

Looking forward to your comments.

struct Vroom {
    let model: String
    let seats: Int
    private(set) var currentGear = 0

    func idle() {
        if currentGear == 0 {
            print("...")
            print("Why aren't we moving? Let's GO!")
        }
    }

    mutating func startCar() {
        currentGear = 1
        print("brum brum brum brum brum brum brum...")
    }

    mutating func gearUp() {
        if currentGear < 5 {
            currentGear += 1
            print("CLICK-PSST-CLANG! Vroooooom...")
        } else {
            print("RRRR!!! Gear down! You're breaking the car!")
        }
    }

    mutating func gearDown() {
        if currentGear > 0 {
            currentGear -= 1
            print("Clank-Psssh! brrr...")
        } else {
            print("Either gear up... or just get out and walk.")
        }
    }
}

var pintoBlue = Vroom(model: "Pinto", seats: 2)

pintoBlue.idle()
pintoBlue.startCar()
pintoBlue.gearUp()
pintoBlue.gearUp()
pintoBlue.gearUp()
pintoBlue.gearUp()
pintoBlue.gearUp()
pintoBlue.gearUp()
pintoBlue.gearDown()
pintoBlue.currentGear
pintoBlue.gearDown()
pintoBlue.gearDown()
pintoBlue.gearDown()
pintoBlue.gearDown()
pintoBlue.gearDown()
pintoBlue.idle()
pintoBlue.currentGear