tractor-trailer

Normally, that phrase refers to a tractor-trailer combination turning sideways around the towing joint.

Some back-of-the-envelope math says that's almost a tractor-trailer worth of hardware a month.

It's like using jet airplane to haul a tractor-trailer.

I've often wondered why GM doesn't back a tractor-trailer full of money in Mays's driveway to switch sides; in my opinion, GM never found the magic again after Harley Earl died.

Using the approximation that lifting 1 kg to a height of 1 meter is about 10 joules, lifting 10 million metric tons 100 meters is 10 Tj, or about the output of a tractor-trailer engine, running continuously, all year long.

That includes 158,000 transit bus drivers, 500,000 school bus drivers, 170,000 taxi drivers and chauffeurs, 1.6 million tractor-trailer drivers, 777,000 delivery truck drivers and 400,000 driver/sales workers (restaurant take out, newspaper delivery, etc) By comparison, there are 3.7 million working in all computer and mathematical occupations.

A Washington Post report[1] says, "Daimler’s tractor-trailer, called the Inspiration Truck, relies on cameras and radar to guide itself.