It's like a more accurate B&M track! Rip those pieces you'd have to break to make a full coaster though...

     Don't get me wrong, it looks cool and more accurate like fried said, but how would you connect them to supports? Sure, you could place a connector through the main tube, but your options would be limited since the train would hit most connections. 

     Though I do think you might be onto something here. Maybe someone with a knowledge of alchemy can transform flexi rods into steel rods, so that this track of yours can handle a fully-weighted 7 car train.