A car. 
        
.. warning::
   This car is a top secret prototype.
        Here is a plot to show it's true power:
        
.. plot::
  import matplotlib
  import matplotlib.pyplot as plt
  import numpy as np
  # Data for plotting
  t = np.arange(0.0, 2.0, 0.01)
  s = 1 + np.sin(2 * np.pi * t)
  fig, ax = plt.subplots()
  ax.plot(t, s)
  ax.set(xlabel='time (s)', ylabel='voltage (mV)',
        title='About as simple as it gets, folks')
  ax.grid()
  plt.show()