I did these pics a long while ago, the pic below is the nearest to what you're asking for, the Voima is forward a bit. I remember it not being ideal as the bikes won't sit together in line on the BB because the bars clash etc? Also the bikes are sitting on a upslope from the door at the rear...That’s cool.
@Tankboy can you take a lower pic centered on the BB showing the BB inline. Then one from behind and above showing that angle. If not it’s cool. I can do one some day…..
Only way to do it properly would be one bike at time with fixed camera then photoshop overlays etc?