An arcade gun shooting game, by Atlus of all companies. The players use some kind of kickass miniguns, and the monitor is encased in a protective glass display. L.A. Machineguns Rebirth? Looks like it.
http://www.famitsu.com/game/news/1210476_1124.html
http://dol.dengeki.com/data/news/2007/9 ... 8bc6b.html
http://plusd.itmedia.co.jp/games/articl ... 087_2.html
Here's a report, in Japanese, from the AM Show in September (from where all the above coverage was also taken). Haven't bothered trying to read it yet, but it seems to go into considerable detail:
http://teamgun-powers.com/rs_VULCANWARS20070914.htm
Development seems to be handled, at least partly, by a company called エニーワークス (Eniworks?) I've never heard of them, and a quick search turned up nothing. Also, no idea what system the game runs on. Release is currently scheduled for sometime this year.