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The Rocket Racing League, an aspiring Formula 1 for rocket racing,said Wednesday that it completed its three test flights with a newliquid oxygen-alcohol engine from Armadillo Aerospace, a suborbitalspace company founded by Doom creator John Carmack. This summer, the RRL also secured a highprofile sponsorship from a clothing brand that people wouldn'tnecessarily associate with rockets: DKNY for men. The premiereracer for the league now will have the luxury clothing maker's namepermanently brandished on its vehicle--a potential marketing coupif the RRL eventually airs on TV, as expected.

More importantly, the successful engine trials mean that NewYork-based RRL is that much closer to production of its fleet ofrockets and upcoming public races, which have been pushed backseveral times. Now, the RRL needs approval from the FederalAviation Administration, which is no small feat and could causemore delays.