DETROIT (AP) -- The Detroit Belle Isle Grand Prix has been canceled because of economic problems in Michigan and the country, the latest setback in the sport rocked by sponsorship woes and a series of cutbacks and layoffs.
Set for Sept. 4-6, the event also included American Le Mans Series and SCCA Speed World Challenge races.
"Considering the tough times we're all experiencing, we just couldn't ask the parties to give, and give more," Denker told the Free Press.
Also Thursday in Ohio, Mansfield Motorsports Park announced its closing, also citing the slow economy. The move came a day after the NASCAR Camping World Truck Series race scheduled for May 23 was canceled. NASCAR said Iowa Speedway in Newton, Iowa, will replace Mansfield on the truck schedule, with the race scheduled for Sept. 5.