A cosmetic composition suitable for topical application, for example, is provided. The two-wheeled dolly comprises an L-shaped frame for supporting the load, an extendable handle which may be reversed to allow the user to more easily descend stairs with a load, and a pair of bicycle-type wheels each having a diameter in the range of about 16 inches to about 30 inches, a diameter of 23 inches being highly preferred for such stair use. An internal combustion engine is provided with such a belt drive arrangement. The hinge portion can be disposed to the obverse side of the first and second members of the seat. Consequently, the present method is capable of accurately building map information based on the static object in a dynamic environment having a large number of dynamic objects and achieving a dynamic object avoidance or chasing function using position information acquired to build the map. In another embodiment, the accumulator is employed as a bonus re-triggering event in the bonus game.