"Speed Addiction"... if this you're talking about was played on the First Episode of the anime wherein Akio made his first test on his S30 on the Wangan, and wherein Ko-Chan also tells him to be careful since it's his first try... Well, i guess we're looking for the same song not part of the current Wangan Midnight Anime OST... i downloaded the available soundtrack in this site... but sadly, it ain't part of this collection... Maybe, anytime soon the 2nd volume might be released... I hope!