"If you're a 200-pound guy, you'd basically have 400 pounds you're trying to squat and 1,000 pounds you're trying to hold yourself up against. If you can imagine trying to do that at the same time in a weight room, that's what they feel twice a lap," Goldberg said.
"It's not so much as just drivers, but the poor guys working on the car. They don't have days off," Goldberg said. "When we're back at the shop, we're not just sitting by the pool drinking margaritas."