Kingsford® to Back Marcos Ambrose in the NASCAR Busch Series. Kingsford® Charcoal will celebrate its 10th season as a NASCAR Busch Series Sponsor with Marcos Ambrose behind the wheel of their #59 Kingsford Charcoal Ford Fusion. Ambrose, a former two time Australian V-8 Supercar Champion has performed strongly in his rookie season in the Craftsman Truck Series, his first competitive experience on oval tracks after a storied road racing career in Australia and Europe.