Hydractive 3+ is now 20 years old. Bose is late in the game and reinventing the wheel. Citroen has been leading active suspension tech since 1954. Mercedes, BM

Hydractive 3+ is now 20 years old. Bose is late in the game and reinventing the wheel. Citroen has been leading active suspension tech since 1954. Mercedes, BMW, others have adopted it later.