A new car break-in is done to establish new internal mating surfaces of mechanical parts, to seat new piston rings, to establish new seal surfaces, to condition new mechanical parts--to make sure all the moving parts were working together as smoothly as possible. After the break-in period, which lasted for about 1000km or more on average, the vehicle could be driven without concern.
Now you have clocked around 1400 km you should not be worried about damaging your engine any more and can take it for a long run.
