We tried to tow our 2004 Toyota Sienna on a wide body tow dolly and it did not work out too well.
You only have about 3 inches of clearance on both sides between the body and the fenders of the dolly. Made a couple of tight turns in gas stations and the fender dented the van body, scratched the paint, etc. $1700 in body work to repair.
We have a 2008 Town & Country minivan that we flat tow with a Remco transmission pump. Worked well except in hot weather.
My Jeep Grand Cherokee is a dream to flat tow. Put transfer case in neutral and away you go.
Tom and Katharine
'07 Winnebago Tour 40TD, 400hp Cummins
RVing for 19 years & 150,000+ miles