What a marvelous idea and a wonderful sight to behold. Moms who own bucket bikes (called "bakfiet") compete in a tournament in the Netherlands.
They not only race for speed but they do an assortment of skill tricks including weaving between cones and jousting for rings hanging from lamp posts.
One thing to note in this video is the handling character of two wheel and three wheel bucket bikes. The two wheel bikes are slightly faster but harder to turn sharply. Obviously the trike allows the rider to concentrate on other tasks more since they don't have to balance.