from abc import ABC, abstractmethod
import copy

class Car(ABC):
    @abstractmethod
    def clone(self):
        pass

    @abstractmethod
    def specifications(self):
        pass

class ElectricCar(Car):
    def __init__(self, model, battery_capacity):
        self.model = model
        self.battery_capacity = battery_capacity

    def clone(self):
        return copy.deepcopy(self)

    def specifications(self):
        return f"ElectricCar(model={self.model}, battery_capacity={self.battery_capacity}kWh)"

class GasolineCar(Car):
    def __init__(self, model, engine_capacity):
        self.model = model
        self.engine_capacity = engine_capacity

    def clone(self):
        return copy.deepcopy(self)

    def specifications(self):
        return f"GasolineCar(model={self.model}, engine_capacity={self.engine_capacity}L)"