english: Personally, it is my opinion that the term was most likely adopted from the former than the latter because of the wooden plank extension placed at the back seat across the motorcycle's main body which serves as additional seat to hold more passengers and, therefore, closely resembling the Skylab and its protruding satellite wings.
non_english: Ik persoonlijk ben van mening dat het woord van het ruimtestation is afgeleid. De houten plank aan de achterkant van de motor is gemaakt om extra zitplaatsen te creëren en door die plank lijkt de motor op de Skylab met zijn vleugels.