"Oh... I get it. Platform Nine and Three-Quarters suddenly closed for some reason, and you were afraid you wouldn't make it back to school on time, so... instead of going home to ask Mrs. Weasley for help, you slapped your foreheads and decided to drive this poor little alchemical... car to school yourselves..."
As he spoke, Kayson clapped his hands as though applauding Harry and Ron.
"A very impressive experience, and a very fine solution. Gryffindor loses two hundred points."
Ever since Dumbledore had opened his mouth at the end of last term and awarded Gryffindor two hundred and fifty points, Kayson had gradually let himself go as well.
After all, Hogwarts house points had already undergone who knew how many rounds of inflation under Snape and Dumbledore's manipulations. One more person like him made no difference, and one fewer made no difference either.
"Then, Professor, is this matter over now?" Harry asked hopefully.
"Of course not. Professor McGonagall will hear about this." Kayson shook his head and casually climbed into the somewhat battered alchemical car.
"Mr. Weasley made this?"
"Yes." Ron puffed out his chest with some pride.
"Not bad craftsmanship. Now I know where the twins got their talent for alchemy. And Ron, where does your family live?"
"The Burrow, outside St Catchpole village, Ottery, Devon."
Kayson fiddled with the controls in the driver's seat before stepping back out. Soon, the car rose into the air by itself, gradually turned invisible as it gained altitude, and flew back to the Weasley family's Burrow.
"If the four of you hurry back now, you might still have time to fill your stomachs. I hope you eat quickly, because Professor McGonagall's punishment won't wait too long for you..."
As the four young wizards slunk back to the Great Hall, Kayson returned