Teaser videos can go one of three ways. In worst-case scenarios, they either a) fail to engage you and get you excited about a thing, or b) they show you way too much (see many modern movie trailers that give away way too much).
It's the third and most ideal way that seems to be the rarest. Luckily, if you put your best headphones on before you view Honda's V3 Engine Concept teaser video, I think you'll agree that they've done what they set out to do here: Build more than enough excitement and anticipation.
That's not a request, BTW. Put headphones on and have them turned up before you start watching this video. Otherwise, you won't get the full effect. It's under a minute long, so please give it your undivided attention for the entire 50 seconds for best results.