steps ( i think )
1) have a rh8 inside your moc
2) drive in a retro custom to moc
3) when you get the alert the storage is full...accept the alert and pull your cord out of the controller.
when you spawn inside moc you will see both rh8 and retro inside.
4) change to vehicle weapons workshop $955,000
now you have a glitched custom inside MOC!
im trying to figure out how to get the retro to stay, when i leave and summon a faggio the custom dissapears.
also the retro is stored in the garage it came from...... i have tried to order a rh8 over the retro but then it despawns from inside the moc.