Which manufacturer debuted the first radar-assisted ACC system capable of applying automatic brakes in 1999?

Answer

Mercedes-Benz

Mercedes-Benz unveiled 'Distronic' in 1999 on the S-Class, making it the first system utilizing radar that could automatically apply the brakes based on readings.

Which manufacturer debuted the first radar-assisted ACC system capable of applying automatic brakes in 1999?
inventorVehicletechnologysystemadaptive cruise control