Abstract: A driving assistance device includes: a vehicle group search unit that acquires a most frequent vehicle speed of the vehicle and to search for one or more vehicle group, the most frequent vehicle speed being a vehicle speed that is most frequent, the vehicle group traveling at one of the most frequent vehicle speed and a speed close to the most frequent vehicle speed; a distance information generation unit that generates the vehicle group searched for by the vehicle group search unit and distance information on a distance between the vehicle group and an information-receiving vehicle that has sent the most frequent vehicle speed; and a merging assistance unit that sends the distance information generated by the distance information generation unit to a user terminal device and assists the vehicle in merging into one of the vehicle groups searched for by the vehicle group search unit.

Abstract: A parking lot guidance device includes a processor. The processor is configured to cause a communication unit to transmit exit information to a vehicle with the highest priority among other vehicles that are transmission targets. The exit information includes information of a size of a parking section in which a host vehicle is parked, information of a position of the parking section in which the host vehicle is parked, and information of a start of exit of the host vehicle.

Abstract: A driving support device includes a memory and a processor including hardware. When a vehicle is placed inside a rest facility and at least one of parameters indicative of respective states of traffic jams on roads ahead of and behind the rest facility satisfy a predetermined reference, the processor transmits, to a device related to the vehicle, information that proposes a departure from the rest facility.

Abstract: A To-Do management apparatus includes a memory and a processor including hardware. The processor is configured to detect a time in which a driver of a vehicle is freed from driving operations of the vehicle, and provide, in the detected time, the driver with information for promoting accomplishment of a work that is entered in advance, that is not related to the driving operations of the vehicle, and that needs to be executed by the driver. Thus, it is possible to promote the accomplishment of the work that needs to be executed by the driver, at an appropriate timing and without interfering with the driver's driving operations.

Abstract: A driving support device includes a memory and a processor including hardware. When a vehicle is placed inside a rest facility and at least one of parameters indicative of respective states of traffic jams on roads ahead of and behind the rest facility satisfy a predetermined reference, the processor transmits, to a device related to the vehicle, information that proposes a departure from the rest facility.

Abstract: A parking lot guidance device includes a processor. The processor is configured to cause a communication unit to transmit exit information to a vehicle with the highest priority among other vehicles that are transmission targets. The exit information includes information of a size of a parking section in which a host vehicle is parked, information of a position of the parking section in which the host vehicle is parked, and information of a start of exit of the host vehicle.

Abstract: A driving assistance device includes: a vehicle group search unit that acquires a most frequent vehicle speed of the vehicle and to search for one or more vehicle group, the most frequent vehicle speed being a vehicle speed that is most frequent, the vehicle group traveling at one of the most frequent vehicle speed and a speed close to the most frequent vehicle speed; a distance information generation unit that generates the vehicle group searched for by the vehicle group search unit and distance information on a distance between the vehicle group and an information-receiving vehicle that has sent the most frequent vehicle speed; and a merging assistance unit that sends the distance information generated by the distance information generation unit to a user terminal device and assists the vehicle in merging into one of the vehicle groups searched for by the vehicle group search unit.

Abstract: Multi-layer fullerenes with a novel structure which are expected to be applied to various fields, and a method of manufacturing the multi-layer fullerenes. The method comprises heating carbon-containing substances at a temperature of 2300° C. or higher in the presence of a C60 fullerene to obtain novel multi-layer fullerenes which include a first multi-layer fullerene having a C60 fullerene enclosed in a C240 fullerene (C60@C240), a second multi-layer fullerene having a C240 fullerene enclosed in a C560 fullerene (C240@C560), and a third multi-layer fullerene having a C80 fullerene enclosed in a C240 fullerene which is enclosed in a C560 fullerene (C80@C240@C560).