Provided is a system whereby the self-driving capability or each vehicle can be improved by using not only an experience of own vehicle but also an experience of another vehicle. For example, suppose own vehicle (V1) has no experience of having traveled on a root (R). On the other hand, another vehicle (V2) has experienced traveling on the root (R). The another vehicle (V2) acquires various data pertaining to driving when traveling on the route (R), and stores the various data in an onboard storage device. The another vehicle (V2) provides information including the various data stored in the storage device to the own vehicle (V1) as experience information. The own vehicle (V1) can achieve self-driving capability at the same level as the another vehicle (V2) by performing self-driving control on the basis of the experience information of the another vehicle (V2), which has experience of having traveled on the root (R).