Irem has Bumpy Trot: Vehicle Battle Tournament scheduled to come out sometime in July in Japan. The actual date is probably July 10 in Japan, but Irem hasn’t updated their information with an actual date. You could import Bumpy Trot: Vehicle Battle Tournament when it comes out, but if you pre-order the game you get the excellent looking PSP pouch pictured above as a bonus.
Unfortunately, I haven’t seen any of the major import retailers selling the game and Steambot Chronicles pouch combo. Perhaps this is a brick & mortar promotion in Japan only.
Images courtesy of Irem.