After getting on the "magic" bus, Mrs. Raiford drove across the parking lot. As they went, the bus started to shrink. And by the time it got to the other side of the parking lot, it had become so small that it was microscopic.
The bus flew through the air, as it was aimed at Sarah McMillan (of all people). The tiny bus flew up her skirt and entered her body via her vagina.
Most of the guys on the bus had dreamed of getting up Sarah's skirt. But not like this.