This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG for various car makes. Each circle represents a make, positioned by horsepower and torque, with its size scaled by highway MPG and color mapped by make using `d3.scaleOrdinal` and `d3.interpolateTurbo`. The visualization is rendered as an SVG with `d3.axisBottom` and `d3.axisLeft` for axes, and includes interactive tooltips on mouseover. A legend encodes both bubble size and categorical color, with data sourced from `bubblechart.csv`. Animated transitions handle tooltip appearance and hover effects.