Kreyer began racing in half scale NASCAR cars in the Junior Cup series in 1995.

Kreyer won his first Super Late Model feature at Wisconsin Dells, and was the track's Rookie of the Year.

Kreyer competed in the Wisconsin Challenge Series for the entire 2005 season, and finished tenth in the final points standings.

[3] Kreyer made his first NASCAR start in the Craftsman Truck Series at the Kroger 250 at Martinsville Speedway on March 31, 2007.

Early in 2007 Kreyer announced that he would be attempting to qualify the Mac Hill Motorsports car for four NASCAR Busch Series races in 2007.