Many automakers state "connected" technology will dramatically innovate the car-life. In fact, IVI (In-Vehicle Information) system already starts communicating with the data saved in the cloud to achieve seamless data exchange between home/mobile computer. That is a significant improvement because many people demand that. However, the validation of connected system is getting much harder than conventional one due to its enormous complexity. This keynote tries to give you a hint how to tackle with such new challenges.