Need help - How to transport my turntable

My local dealer put a new arm, cart and set up my table which I'm picking up later today. (Oracle Delphi V).

I don't have the original box and my car is a sports coupe with a modified, very stiff suspension. Any tips for transporting it (about a 20 minute drive on bumpy roads)?

I was thinking of putting it in the flattest spot in the trunk on top of a thick blanket, foam padding and a big pillow, with an elastic net to hold it secure. I was going to cut blocks out of foam to wedge the turntable platter and suspension so it wouldn't move around. Does that sound good enough? Any advice/ input?

Thanks.