hi. i'm trying to research a bike posted on ebay that my girlfriend wants to buy. it's an "Alpha Mercury" track bike. It has a really strange frame. both the top tube and down tube have a curved shape. the top curves intoward the bottom near the seat post and the down tube up toward the top. it was designed by frankinstien (sp? - gotten from site) bike worx. i'm wondering af anyone has any info on one of these, since i couldn't find anything on google or bike reviews, or anywhere. their post has only positive reviews, but i'm looking for a little more info than that. thx.