Not sure how to explain this but my 2003 skoda octavia stops accelerating when I am driving it.  It can be at any speed, it will just stop accelerating.  The engine keeps running like it is idling.  I normally wait a few seconds and drop the car into lower gear and then it will go again.  Some times it only last a couple of seconds some times more.  Kind of like the car is in neutral when running.  I already replaced the timing belt, and fuel filter.  Not sure what can be wrong with it.  

What engine?

Sounds getting scanned for faults codes is the next step.

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As you are in Panama, is it automatic transmission?

Brake light switch, get it scanned with some diagnostic software.

+1 for the brake light switch. I had the same issue.

I believe that when the brake is depressed it closes the throttle.

Guys I have just had the same issue with my VRS. What was the outcome and what is the fix? Bought a fuel filter today to try that.