Discover the most expensive cars ever sold, their wild price tags, racing legacy, and what makes them truly priceless today.

This year’s list includes the builders improving robotics, powering drones, and using machine learning to develop greener economies across Europe.

Both versions used Mustang powertrains, but the AIVs switched from Ford’s pushrod 5.0-liter V8 to the DOHC 4.6 fitted to the ...