Fortunately mine fits into the back of my Scion Xb, but I have used a standard trunk mounting bike rack to hold the 36, a 29, and a 24.
We have a trip coming up in our Prius, which has a Thule Roof Rack with bike attachments, and the plan is to attach the 36 and 29 onto those. The wheel would go in the gutter with a strap around it and the top ot the frame would go into the vice grip. That is the theory, but I haven’t tried it yet.
Similar to what is in this thread:
But my rack looks like this:
http://www.thule.com/en-us/us/products/carriers-and-racks/bike-carriers/roof-mounted-bike-carriers/thule-criterium-598-_-13898
If it doesn’t work then the unis will go in the back with the seats down and the kids will ride on top - with the dog.