class Vehicle {

	private String VIN = null;

	Vehicle(String vin) {
		this.VIN = vin;
	}

	@Override
	public String toString() {
		return "(" + VIN + ")";
	}

	@Override
	public boolean equals(Object obj) {
		if(!(obj instanceof Vehicle)) {
			return false;
		}

		Vehicle v = (Vehicle) obj;

		return this.VIN.equals(v.VIN);
	}
}