硬核越野拉力（多层音效） prompt

An 8-second hardcore off-road rally sequence. Three mud-caked 4x4 vehicles power across a wide river crossing, water spraying violently from oversized tires. Wide tracking shot from the riverbank, then a low-angle hero shot following the lead vehicle. Audio: Roaring V8 engines, sloshing water, gravel impacts, tire chain rattles, occasional driver shouts from inside the cabin.