How can I execute in parallel Selenium Python tests with unittest

For example I have two tests:

class Test(unittest.TestCase):
    def setUp(self):
    self.driver = webdriver.Firefox()
    self.driver.get("http://google.com")

def tearDown(self):
    self.driver.quit()

def test_selenium_1(self):
    search_field = self.driver.find_element_by_id("lst-ib")
    search_field.send_keys("Test 1. Number 1")
    search_field.submit()
    time.sleep(2)

def test_selenium_2(self):
    search_field = self.driver.find_element_by_id("lst-ib")
    search_field.send_keys("Test 1. Number 2")
    search_field.submit()
    time.sleep(2)

if __name__ == '__main__':
    unittest.main()

How can I execute these two tests in parallel with concurrent.futures.Executor?

Is it possible?