In May, Honda recalled some 2014-2015 Acura MDX 2WD and AWD, RLX and 2014 Acura RLX Hybrid vehicles, because its Collision Mitigation Braking System could incorrectly interpret certain roadside objects such as metal fences or metal guardrails as obstacles and unexpectedly apply the brakes. In October, Google and Volvo were demonstrating their driverless cars for journalists on two continents – the U.S.