Bajdi:
I saw a video on youtube recently where someone had replaced his car battery with a couple of super capacitors. Car started perfectly, so some of these super capacitors can definately provide quite a bit of current.
Then that would have been a fraud/fake video designed to impress the inexperienced. Super caps are among the favorite subjects to 'inspire' the inexperienced and untrained in electronics fundamentals.
At least that is my opinion.