Mobileye said Friday that it warned Tesla, prior to the release of its autopilot system, not to allow drivers to use it without their hands on the steering wheel. The system Tesla rolled out in the fall allows drivers to remove their hands, while the car takes control. Mobileye's statement escalates a public spat with Tesla and will almost certainly draw the interest of two federal agencies investigating the death of a driver while using autopilot in a May crash in Florida. At issue is whether Tesla rolled out the system before it was ready.