OK!!!
These mats are a great tool. I have been using mats like them with the BLM for 15 years. The ones we use are a bit heavier and larger. The BLM people I have been training each year are the "BLM Fist Responders" and other departments.
The ones we use are made from the old used conveyor belts from the rock queries. The areas we use them the most are in the Algodones Dunes (Glamis) in California. They are good for distributing the weight and adding traction. They can mold themselves to the terrain (reducing the amount of shoveling).
They are approximately 2' X 5' smooth belt. With 1.25" holes drilled into them they grab the sand, mud and soft dirt. With some re-bar and large washers (plate of steel) welded to the top pf the bars you can add extra ground grip to them. The 16" to 18" bars driven into the ground can also be used to tie the mats together, for a longer ramp in needed for only one side of the vehicle.
You can also tie a rope to the mats and the vehicle (without the Re-bar used) so when you get moving you can drag the mats with you. When you get to a solid location to stop, you do not need to go back and drag the mats back to your vehicle.
These do work in many situations and not all situations are the same.
As a tool they have other uses, door mat and shower mat.
The downsides are they are heavy, they do not work in every situation.
For the dunes, mud and some other situations they do work well.
Thank you, for bringing your idea to the forefront so others can learn that there are good solutions to any situations.