A Tesla crash in Chino Hills set off a wildfire that’s threatening to burn hundreds of homes. NBCLA “Firefighters continued to make progress through the night, bringing containment to 50%. Crews will remain engaged extinguishing hot spots and strengthening containment lines,” officials said Thursday morning. Fire investigators determined around noon Thursday that the crash caused the blaze. Grand Avenue remained closed between Grand Avenue Park in Chino Hills as fire crews continued to work in the area. The Grand Fire ignited when the driver of a Tesla lost control of his vehicle in a rollover crash near roadside brush. NBCLA The cause of the crash or the extent of the injuries to the Tesla driver were unknown. Filed under