there are two seaters that burn 2.4litres/100km/person, amounting to 4.8 litres per 100km@225 km/h. Now if you look at the distance you need to cover from Pécs to berlin, which is around 1300 km (by car) or about 1100km by plane, and assuming the average consumption of a car for two people+luggage is around 6-7/litres/100km you won't have that much of a difference, but you'd save about 12 hours of traveling. I'd say perfect!
You have to take into account all the different taxes, handling fees, landing fees, takeoff fees, and all the other costs involved though.
That said, I REALLY want to learn to fly a plane one day myself. Even if I could never afford to own one, you can hire them, and there are loads of airports and airfields near me with flying clubs, where you can just use their planes.
Or you could become an airline pilot, but that sounds like less fun.