you get out of the car and call 911
No.
You can run an engine in/out of a car without a transmission. Car wont move and engine wont be mounted properly. So i suggest not to run an engine without a transmission unless you know what you are doing.
The noise
It is referred to as the engine or powerplant.
Not very long at all. Without engine oil the engine will lock up and become unrepairable. You will have to purchase a new car of this happens.
gas
glider
Probably a car without an engine or any wheels.
An engine manufacturer.
If you drive your car without oil and it dies, your engine has seized. Time to replace the engine or the vehicle.
In most cases the car at the front of a train is the engine or the locomotive. However, sometimes the train is pushed from behind and then the engine is the car at the end.