class_docstr: Dataset used to parallelize the transformation of the dataset via a DataLoader
code: def __init__(self, dataset: StanfordCars, output_path: str):
      self.dataset = dataset
      self.output_path = output_path
  
imports: import argparse
  import os
  import shutil
  from scipy import io
  from torch.utils.data import DataLoader
  from tqdm import tqdm
  from vissl.utils.download import download_and_extract_archive, download_url
  from vissl.utils.io import cleanup_dir
label_desc: Use image node_id 1 to create a new StandfordCarsMapper object  with example: obj = StandfordCarsMapper(dataset, output_path)