It always amazes me when I see pics of footings in other places. Here in central NC they are always dug into the ground, not set on top. Our footings are 6 x16 for 1 story, 8 x 18 for 1 story on a basement, and 8 x 20 for 2 story, and we dig them into the ground.
Here almost every concrete plant has gone to front loader trucks , and they are all wheel drive. When they poured my basement, the driver drove around the house and stuck the chute in the basement door, not to amazing till you see that I only cleared about 30 ft outside the foot print