Buy sturdy rope nylon or polyester based.
Mattress and box spring on top of car.
Place the mattress on the roof making sure it s in the middle.
In addition keep an eye on the mattress so you notice if it starts to slip a rope comes loose or the plastic breaks.
Put a piece of rope on the roof of the car that goes from back bumper to front bumper.
While driving with a mattress on top of your vehicle it is a good idea to stick to the back roads and stay off of busy streets just in case something happens.
I have a hyundai accent and need to move a queen size mattress and box spring 50 miles.
If so how would be the best way of strapping it down.
Do you think it is safe and or possible to move a queen size mattress on top of it.
Put the mattress on top of the car and rope so that it goes length wise with the length of the car see pics above.
Secure your mattress to the top of the car.
Toss the first long piece of rope over the length of the mattress.
You can use a plastic mattress cover to prevent your mattress from collecting dirt and permanent stains.
Still there is a basic method to follow when tying a mattress to the roof of a car.