The car asks like the gas pedal is stuck and the fumes that smell like brakes getting hot.

he could be close to the problem but get it to an accredited professional brake shop for a proper diasgnosis
not enough brake pedal free play will do the same thing as will a faulty master cylinder not allowing fluid to return to the reservoir

gas is a very high evaporative liquid..fumes extremely strong..if overfull it will smell..and if emissions equipment has issues it will smell also.. when the engine gets hot, any gas present will vent off until the engine cools..thats the fuels evaporative nature..still keep an eye out for issues..

For the first problem, if you can get me the codes I may be able to help you figure out the problem with the gas smell. The fuel gauge problem could be the gauge on the dash or the sending unit in the tank.
You should have the body computer scanned for trouble codes to find out whats going on with the ABS and traction control.
I have no clue on the humming noise.

Yes you could have warped the drums by getting them hot with the emergency brake on.
You may have to replace the rear drums and shoes.

There are few possibilities that can cause such problem.
I recommend you few help links related to your problem.Click the link below and follow the troubleshooting;-----Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html-----------
Brake pedal stuck? http://howtobyme.blogspot.in/2012/03/brake-pedal-stuck.html

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Car only starts when gas pedal is pressed? http://technoanswers.blogspot.com/2012/01/car-only-starts-when-gas-pedal-is.html

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Car won't start without hitting the gas pedal? http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-without-hitting-gas.html

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emits whitish bluish smoke and bad fuel smell from exhaust

http://schematicsdiagram.blogspot.com/2011/12/van-emits-whitish-bluish-smoke-and-bad.html

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White smoke and Acrid Smell? http://whoisbyme.blogspot.in/2012/07/white-smoke-and-acrid-smell.html
---------- Car stalls and throws white smoke from exhaust? http://repairhelpcenter.blogspot.com/2012/01/car-stalls-and-throws-white-smoke-from.html

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This will help.
Thanks.

they exaust is probably not hooked togeather somewhere or is apart in someway so the gas fumes are getting released still but not going through the exaust all the way or not at all depending where it is unhooked and those hot gas fumes are near the motor making it hot

to much gas fumes can make you ill thats why you fill or transfer gas in a well vented area --will need to look for what vent ,line or component is causing the fumes

That sounds like the "Porportioning valve" is defective.
You may want to go to your local library and check out a Chilton's, or some other repair manual for the "how to" to fix yourself or take it to a tech you can trust.

Try having the area that the hose was disconnected from steamed cleaned, or go to a car wash wash and spray the area. It might help, that is if you already haven't done so.

I can't answer the question about the gas fumes, but I had the same problem last year with the "Service Traction Sysytem" message and the Trac and ABS lights coming on in my Impala. Mine turned out to be because of a bad wheel bearing, that was causing the ABS and traction system not to work. I'm not sure if you've experienced this, but another thing that would happen with mine was that I would go to brake and have a hard time depressing the brake pedal, almost like it was pushing back. That is the point when the Trac and ABS lights came on.