Call your local U-Haul Rental Agency for current prices.
Because you cannot haul very much in a car. It was invented to haul cargo not passengers.
7000
8 cords 9 if your lucky
As much as it wants
7500
Safely, 500lbs.
20.000 - ~25,000, depending on specifics.
Concrete is measured in yards, not tons. As for permissible tonnage on a dump truck, it'll vary by state. IIRC, in North Carolina, a tri-axle dump is typically good for 16 - 18 tons, dependent on tare weight, wheelbase, and whether they're traveling on primary or secondary roads.
9 bags make 4 heavyer
At least 1,000 lbs.
About 5000 pounds, but can haul more than that.