To me adaptive cruise control is cruise control. As I said cruise control doesn't have to have active braking because as you point out cruise control predates

To me adaptive cruise control is cruise control. As I said cruise control doesn't have to have active braking because as you point out cruise control predates active braking. To me its analogous to a graphics card in a computer, a computer doesn't have to contain a graphics card, after all the computer predates the graphics card. Nevertheless you wouldn't argue that a graphics card in a computer isnt part of the computer.