Jason Leffler funeral Wednesday

BROOKLYN, Mich. -- The funeral service for NASCAR driver Jason Leffler will be held on Wednesday in Cornelius, N.C.

Leffler was killed this past Wednesday night when his sprint car hit the wall and rolled several times at the 0.625 dirt oval at Bridgeport Speedway in New Jersey. The medical examiner said the cause of death was blunt force trauma to his neck when the car hit the wall.

Sprint Cup driver Dave Blaney, who witnessed the accident, told reporters at Michigan International Speedway that he believes something broke on Leffler's car and forced it to veer into the wall. Three-time Sprint Cup champion Tony Stewart, in talking to friends in the industry, also was led to believe a part failure contributed to the accident.

New Jersey State Police that are looking into the accident declined to comment beyond the investigation is ongoing.

Leffler, who won two Nationwide Series races during his NASCAR career, was survived by 5-year-old son Charlie Dean. A trust fund has been set up for Charlie with Turner Motorsports owner Harry Scott Jr., former Braun Racing owner Todd Braun and Great Clips CFO Steve Overholser serving as trustees.

The family has asked that donations to the Charlie Dean Leffler Discretionary Trust be made in lieu of flowers.

David Newton covers NASCAR for ESPN.com. He can be reached at dnewtonespn@aol.com.