It isn't going to spontaneously ignite. Spontaneous ignition is a rare event and is caused by a chain reaction of heat build up and lack of ventilation usually occuring in paint soaked rags. Gasoline does not spontaneously ignite. Also, temperature is irrelevent assuming it's above -40 C. Gasoline burns at any temperature above -40 C.
You are correct that you can actually put a cigar out by dipping it into a bucket of gasoline. However one spark of any size is all that it takes to set off the gasoline vapours. The reality is that the cigar is just not burning hot enough to ignite the vapours. It needs to be about 750 F if I remember correctly. A spark exceeds that temperature.
You don't need to worry about ignition of the gasoline in the tank. It's the vapours leaking out of it, rolling across the floor and igniting from your PS3 sitting on the floor of your living room. That will then flash back to whatever is available to burn, whether that's your gas tank or not is irrelevant other than the size of the resultant explosion that you may get, either way there is lots to burn once the gasoline vapours ignite.
I won't argue with you other than to say you're wrong and don't know what you're talking about.

You don't need to worry about the gasoline in the tank. What you need to worry about is the vapour coming off the gasoline in the tank. The more gasoline in the tank the more vapour can be produced. Having a full tank does NOTHING to prevent ignition of the vapours escaping the tank and only provides a larger source of fuel.
If you choose to assess your risks by relying on a poorly researched entertainment show, be my guest, but don't proivde advice to gullible sheep on the internet about something you obviously know nothing about. Gasoline indoors is dangerous. Do whatever you want with your bike and your gas cans but don't tell people that storing gasoline inside is safe. It's not.