They just separated the passengers according to their class. F were picked up in Mercedes and a private mini bus that had large recliner lounge chairs with your own person table next to it to put your carry on luggage next to it. There were about 3 or 4 of us on it. The business passengers were picked up in a more traditional looking bus.

I don't know exactly what the J folks get but I am sure it was similar possibly just not as personalised and as fancy.