Gas leak http://www.autozone.com/servlet/UiBroker?UseCase=S001&UserAction=viewSimpleDiagInfo&Parameters=info i am assuming this is a car and not a pickup the gradual leak u have is allowing fuel vapors into trunk of vehicle . fix the gradual fuel leak and u will fix the gas smell inside car as the leak is near rear wheel, u need to fix this if in an emergency your brakes overheat, the gas leak could cause a fire most dangerous situation, not to mention that driving with a gas leak and fuel smell entering car can make you sick ,or even put you to sleep
sounds like your heater core went out
On my 2002 the switch came apart inside the headliner, causing the light to stay on. The push button lens would not click to go off or on. I could not find the part on line and had to go used.
heater core going bad.
If it is water, it could be a plugged up AC condensation drain or if it is engine coolant, it could be a leaky heater core.
Passenger side floor? Could be leaking heater core
A bulging battery is an indication the is a short INSIDE the battery and it is getting overheated, causing gas to expand inside. It could explode on you.
There is a conditioning system drain hose. Eventually it starts to leak inside of the car. Fix the hose.
terrorism, temporary insanity, suicide
Could be bad pulley in accessory belt system if you have power steering, something contacting the rotor on that side or a failing wheel bearing.
check the drain line on the a/c or does it have antifreeze smell to it then it could be the heater core
Probably not, but whatever is causing you to think that could be a serious problem in its own right. You should take your cat to a vet.
The opposite of abrupt could be gradual, slow, or incremental.Calm, kind, nice...