General Tire off-road racing driver Mikey Childress has broken nearly four dozen bones in his body. But he says the first major medical issue happened long before he even learned to drive. That was when he hooked his “wagon” to a car and held on. He paid with an internal organ. Childress has so many bone issues he said he could be known as Doppler whenever the clouds start forming. But the real mission of this conversation was the Childress run at the Mint 400 for General tire. Childress will be at the sharp end of the field when the race unfolds outside Las Vegas. This is a fun few minutes. Listen…