From Bulbapedia, the community-driven Pokémon encyclopedia.
(Japanese: とことこトロッコ Tokotoko Truck) is a Pokémon-based e-Reader application. It is a minigame featuring Pichu. Six cards are required to play this minigame: Celebi, Entei, Pikachu, Pichu, Mewtwo and Lugia, all of which were only available through the JR Train Rally in August 2002.
In the mini game, two Pichu are riding a draisine passing different train stations on their way to the Pokémon Center Tokyo. The player has to make the draisine jump over boulders on the tracks. Colliding with a boulder will reduce the speed of the draisine. The game ends when the end is reached, or if time runs out.