Not sure many people would consider Volvo, Audi, Fiat, Ford, Honda, Hyundai, Mazda, Mitsubishi, Nissan, Peugeot, Renault, Skoda, Subaru, Toyota and Volkswagen to be 'luxury' brands.
Most of the vehicles they sell don't offer CAS, only the top end trims in certain models. Many offer only CWS (no auto braking, just bleeping).
The issue here is their use of the term "most." "Most" vehicles in 2015 is category untrue. Out of the top 10 most popular cars in the US, zero ship with CAS as a base feature, and half don't offer it at all.
In the luxury market, it is more common/popular/standard.
The luxury market is usually where most features now considered standard, originate. CAS is becoming significantly more common within the everyday market. Nissan's new Pulsar for example comes with CAS as standard.
