Transporting Apogee Centaur Major

Hello all,
I am looking at very good condition Centaur Major speakers and if I buy them I need to drive them home for about 200 miles. The owner has the original boxes.
Questions: How do you transport them? Stand up or laying down?

Thanks for your help
Laying down, I've owned 3 pairs. Just be careful.
Thanks for your  inputs.
can I send you email to ask some additional questions about the apogee?