Altoona, IA — This weekend there will be two “MACs” at the Eagle Raceway near Eagle, Nebraska. Austin “AMAC” McCarl will be joining father, Terry “TMAC” McCarl as the Altoona, Iowa pair races in the Ice Breaker Challenge at the banked 1/3 mile oval. It will be Austin’s first career sprint car start. He will be driving the Janet Holbrook owned/Lenard McCarl wrenched #17 Eagle/Kistler.