An auto car on a tow dolly?

The only problem with backwards-mounting it on the dolly is that 60% of the weight should be at the front of any trailer (or ahead of the trailer axle), for safer hauling and less-likelihood of trailer sway. I appreciate the suggestion, but I think playing it safe means mounting it front first and disconnecting the driveshaft (I'll bring wire and straps to tie it to the frame).

:)
When all the weight is on the trailer, true. But a two wheel dolly is different. You'll not get 60% past the front axle. I've owned a dolly, and towed... never mind.
I'm sure it will all work out just fine for you :)