This interactive visualization displays the performance of various car models across multiple dimensions, specifically showing the relationship between a selectable metric, such as Acceleration, Displacement, or Horsepower, and fuel efficiency (Miles_per_Gallon). The view is structured as a small multiples grid, with each panel representing a different country of origin. The visualization uses Vega and Vega-Lite’s API to perform a KDE2D density estimation, which is then rendered as a heatmap using the `viridis` color scheme. Users can dynamically adjust the smoothing bandwidth, cell size, and color scale resolution, while a legend shows the normalized density probability.