A rescue team in the mega truck helps flood victims. Pic/ AFP
A rescue team in the mega truck helps flood victims. Pic/ AFP

Zub Ferrell's passion is driving through the mud and muck of mega truck competitions. But this week he has embraced another mission: using his huge rig to save flood victims stranded after monster storm Harvey.

From his unusually high perch above the road, the crane operator drove his truck, named Old Habits, deep into Texas floodwaters on Friday -- part of an extra-high-clearance four-wheel force that has descended on Port Arthur's hard-hit neighborhoods to shuttle hundreds of people to safety.

"You have people hugging you, we've had people try to pay us. We're not taking any money. The hugs and watching a grown man cry when you come save him -- it's all worth it," Zub said.