Is Vettel unstoppable?

[bodgit]

With three out of four wins and to be honest only tyre wear stopped it (they wont be doing that again) being four is the Red Bull and Vettel unstoppable.
He,s just driving off ahead of the field and his lead already is big. Other cars have bought their improvements to the track and still he just trounces them.
I hope we see someone catch him up soon so the season is not over before it has begun. The finish of last season was the best for years but this looks a completley different story.