A small extension

One version of The Lahmu Prologue had Galen Erso stripping parts off his Land speeder outside (As per Story Board images) this is possibly an alternative to watching Jyn play out the Window. The Land speeder Prop was created as a static prop not a vehicle. It was not a working vehicle.

This would be from the original shoot. His introduction would have been his leg’s under the Speeder before he emerges out from underneath. That would be our original introduction to him.