as i was drivim back home from engine started a smoke green, smelling like burn wires electricity ect. the shut off , i ran out the car. in the middle of traffic. i contacted mechanic , has inform me that the engine has siezed .will no longer turn on. and maybe some ECM or electrical but dat the engine is locked.oil looks very clean radiator fluid clean aswell. what could have caused this no idea. im scare to try to start the car