1988 festival film Kosuke & Rikimaru: The Dragon of Konpei Island marks the first time Toriyama made substantial contributions to an animation. He came up with the original story idea, co-wrote the screenplay with its director Toyoo Ashida, and designed the characters. Short stories and other projects (1996–2011) A third anime adaptation based on Dragon Ball, entitled Dragon Ball GT, began airing in 1996, though this was not based on Toriyama's manga directly. Toriyama was still however involved in some overarching elements, including the name of the series and designs for the main cast. Toriyama continued drawing manga in this period, predominantly one-shots and short (100–200-page) pieces, including Cowa! (1997–1998), Kajika (1998), and Sand Land (2000). On December 6, 2002, Toriyama made his only promotional appearance in the United States at the launch of Weekly Shōnen Jumps North American counterpart, Shonen Jump, in New York City. Toriyama's Dragon Ball and Sand Land were published in the magazine in the first issue, which also included an in-depth interview with him. On March 27, 2005, CQ Motors began selling an electric car designed by Toriyama. The one-person QVOLT is part of the company's Choro-Q series of small electric cars, with only 9 being produced. It costed 1,990,000 yen (about $19,000 US), has a top speed of and was available in 5 colors. Toriyama stated that the car took over a year to design, "but due to my genius mini-model construction skills, I finally arrived at the end of what was a very emotional journey." He worked on a 2006 one-shot called Cross Epoch, in cooperation with One Piece creator Eiichiro Oda. The story is a short crossover that presents characters from both Dragon Ball and One Piece. Toriyama was the character designer and artist for the 2006 Mistwalker Xbox 360 exclusive RPG Blue Dragon, working with Hironobu Sakaguchi and Nobuo Uematsu, both of whom he had previously worked with on Chrono Trigger. At the time, Toriyama felt the 2007 Blue Dragon anime might potentially be his final work in animation. In 2008, he collaborated with Masakazu Katsura, his good friend and creator of I"s and Zetman, for the Jump SQ one-shot Sachie-chan Good!!. It was later published in North America in the free SJ Alpha Yearbook 2013, which was mailed out to annual subscribers of the digital manga magazine Shonen Jump Alpha in December 2012. The two worked together again in 2009,