One quick way to demonstrate it is take an axle with an open diff, remove the drums, rotate the yoke 1 time and see how much the axle flanges turn (assuming there is no resistance on either side and they both go the same amount). Then have someone hold one axle flange stationary and do the same. The single axle turning will go twice as many revolutions. Spider gears are wierd that way.
It's Grouchos old car. He sold it right after it was finished to a guy named Curt. I don't know if Curt is on the Hamb though. Last I knew, the car was a peg leg with 3:08 gears.
That reminds me of a traffic citation that I received in front of high school in 1961 for "exhibitionistic acceleration".
No one got hurt, but I can tell you a piece of something went whizzing past my head in the top of the stands when it blew
Cody, that's my old car. I got the tires from you. Not your fault. Get a hold of me if you need to, OK? It broke my heart to see the damage to the body