I realise it's a joke and the details are irrelevant, but an EV is probably going to take weeks to drain its battery just sitting on in the garage. Days if it's running the A/C.
Moving the vehicle costs so much energy that it's a bit shocking how long an EV battery lasts if you use it for things other than driving.
Even still, my EV could run the electric dryer for 12h straight on the highest settings. Washer is a rounding error in that estimate. It takes a lot to use up am EV battery.
Yes, every door has a system similar to a trunk release cord. AFAIK It's hidden, so if you don't know it exists, you're screwed. Good luck getting your children out in an emergency.
Cats convert CO to CO2, and NOx to N2 (mostly irrelevant for this conversation). In closed space, the exhaust is still deadly, but you are correct in that CO would cause quicker death than CO2 displacing the oxygen.
Relatively low concentrations of CO will cause severe drops in red blood cell's ability to transport oxygen, then follows unconsciousness and death. CO2 in contrast would require higher concentrations to be effective, as it would only reduce the efficiency of gas transfer in the lungs and lead to slow and painful decreasing blood pH - and a strong panic reflex and the 'I can't breathe' feeling - until eventual unconsciousness and death.
Ah okay, my understanding is that the new way is it literally needs to replace the oxygen in the garage with exhaust fumes so you suffocate instead of the nice "going to sleep" that CO caused. I didn't know the science behind it though.