This interactive bubble chart visualizes car performance data, plotting average horsepower on the x-axis against average torque on the y-axis, with each bubble’s area representing fuel efficiency in miles per gallon. The visualization, built using D3 v7, loads a CSV dataset and encodes car make through a color-coded legend. It displays all data points as semi-transparent circles with dark strokes, and implements a custom tooltip that appears on mouseover, showing the specific make, horsepower, torque, and MPG values for each vehicle.