CEDAR RAPIDS — Armed with a white Ford F-150 XLT pickup truck, a Keurig coffee maker, an assortment of creams and sugars and an enthusiastic attitude, Trevor Nicholson had already driven about an hour Friday morning to northeast Cedar Rapids.He was about to travel another 16 or 17 hours to spend a week — if not longer — serving meals to people in Texas affected by the winter storm that left millions without power or running water.“Why not?” asked the 53-year-old Wellman resident, who had a smoker attached to his truck.