Practice customizing plot aesthetics and applying themes to make your visualizations stand out. Using the provided cars_data dataset, create a scatter plot of horsepower vs. mpg, color points by car type, and apply a professional theme. Add a custom title and axis labels.

• Create a scatter plot of horsepower (x-axis) vs. mpg (y-axis) using the cars_data dataset.
• Color the points by the type variable.
• Apply a professional theme to the plot.
• Add a custom title and axis labels to the plot.
• Assign the resulting plot to the variable plot.