AP1100 carrying to dark site - SUV mount?


I have been looking at various cases people have built, planning what to do, but I had a thought and curious if it's a sane one.

I am not hauling this through airports or checking baggage.  It will ride in my SUV, then go from the back about 10' to a tripod when I get to a dark site, then back.  It's a 90 minute drive and no off-roading (i.e. reasonably smooth ride).  There's no need to protect the mount from anything but the ride itself.

What if I bought a pier adapter, one of the flat ones, and just screwed it to the floor in the back of the SUV.  Then to move the mount it comes off the tripod, and onto this SUV mount.  Pop in 3 or so screws.   No OTA or counterweights of course.  

No case, no foam it just sits there. It seems easier than getting one or two very large cases and custom cutting foam.

Is normal driving acceleration, e.g. curves, bumps, etc. any risk to it?   Or do I need a setup where the gears can be disengaged?

Inspired a bit by similar bike racks, where you just clip the bike's front forks to a bracket on the floor of a car and it stands up for the ride.  

Sane?  Risky? 

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