I usually just put a single bike into the minivan short term, leaning against one wall, but sometimes the demands are greater.
My bride would like to be able to park her vehicle in the garage on occasion and there's actually room for one regularly but that space gets commandeered for various projects like the rack photo. We also have a utility trailer that I dreamed would bring home lots of old motorcycles but of all the loads it's carried so far, motorcycles have not been among them. Good thing; there's only room to spare for bikes right now and not much more of that.