A few weeks before the heat of this summer, GMC announced it was coming onboard as the Official Truck of Natural Selection Tour – a series of progression-pushing, snowboard, ski, bike and surf events featuring the best of the best doing their thing way off the grid. The 2026 line of GMCs are designed to access remote terrain and Natural Selection would be the best way to showcase that. The 2026 GMC Acadia Denali Ultimate is designed to climb, pull and muscle through brutal terrain, the vehicle Harry Bryant needs to whomp desert coast in search of unfriendly slabs or Travis Rice to pull his sled through the Tetons. But how does it work for the average surf Dad going through the paces of an average East Coast summer? June and July are a different kind of extreme in an East Coast beach town. Millions of folks from the steaming cities, suburban neighborhoods and rural areas along the I-95 corridor descend on the coast.…