TUTTO....How do I love thee? Let me count the ways!
4 wheels for stability when rolling over the floor or on a parking lot.
The outer frame protects the precious content..my sewing machine.
easy to grab the Tutto by the frame in order to lift it into the car and to take it out of the car.
outside pockets for storing patterns, project bags, etc
extra room to carry my desktop Ott light (in its soft padded bag) in it. I just set it on top of the machine.
Easy to place the machine in the Tutto via the side zippered flap-door
two straps to secure around the machine for added safety and stability for tranporting. Seatbelts for the machine.

fits perfectly behind the front seats in my car.
Expensive? Yes..but the safe and easy transport of my machine is important to me. No buying regrets!
I have a two wheeled trolley that I use to store stash..,THAT one was a waste of $$.
Sandy