Family and friends of a 21-year-old man killed in a Davie County crash last week have scheduled a fundraiser in Clemmons. Isaiah Wayne Jimenez, of Mocksville, was killed on Friday morning when his vehicle drove off the roadway attempting to exit Interstate 40 onto U.S. Highway 64, colliding with multiple trees. The cause of the wreck had not been determined as of Monday, said Trooper Whit Efird, spokesperson for the local N.C. State Highway Patr…