Oh goodness, I would be taking it in the car with me regardless of how I packed it.
I sold a Bernina 710 to an interstate buyer...packed it within an inch of its life with so much packing material and reinforcement on the box sides and plastered it with "Fragile" and "This way UP" stickers over every side of the carton and the freighters still managed to drop it from such a height that the machine was beyond repair when the buyer collected it. Luckily, she had insured it. I would never, ever, trust a freight or removalist company again with anything so precious.