2015 Scion FR-S Electrical System Problems

Defective engine/motor failure spark plug popped out of engine along with coil. The service technician and service manager were shocked at the spark plug broken internally. I paid for spark plug replacement totaling approximately $1,200. Upon inspecting other parts of the motor it was determined the engine bay has coolant inside mixed with oil. The tech mention of engine over heating however the temperature gauge never reached overheating readings. If the engine overheated the temperature gauge failed to alert me while I was driving at any point and expressed this to the service advisor. My vehicle motor failed while I was engaged in driving on the freeway and turn off and on in the middle of flight and travelling at freeway speeds. I originally purchased vehicle at Long Toyota USA in El Monte, CA with zero to 15 miles brand new in 2015 it is less that 10 years and I never experienced a defective motor/engine. Today is October 21, 2022 and my vehicle is still at the Culver City Toyota dealership. When: September 25, 2022, towed vehicle to Culver City Toyota a dealer of Toyota Motor Sales USA Inc Where: Engine/Motor failure occurred in the middle of the 10 freeway at Robertson/Venice exit in Los Angeles, CA. I immediately was able to steer the car to the nearest exit there was a loud pop and then a very loud motor noise was heard. I paid the tow company to take the vehicle to the culver city Toyota to get it fixed. How: While driving. Preferred solution Assistance in replacing engine at no cost due to defects and failures and placing my life at risk while the car was in motion. I am not looking for monetary claims or any gains. I just want my car back fixed I already paid for the spark plugs as i mentioned above but this is a defective motor. All my services have been done through Toyota's trained service technicians I asked all the time for spark plug replacement and they always said it isn't due.