You can recharge a 134a system with air duster cans. https://youtu.be/xmQRB64CHKA
Christianity is not about a historical event. It is knowing the one true living God and having a personal relationship with that God who created you and wants what's best for you but you have to seek Him, not things. Prior to Christ, every god was distant, aloof, and unknowable. The Christian God asks us to be His children! Not mere creatures or things. The God of all creation wants nothing more than for you you seek and love Him, so He can bestow His gifts upon you.
My deepest condolences for your loss.
God calls us home according to his timing, not ours. If you have any unresolved issues with your mom, talk to her. She's in a better place, and can still see you when you are conversing with her. She may or may not be able to offer any tangible sign that she hears you, but then again, she might. People who have died and been resuscitated tell of deceased family members coming to greet them.
Pray that God helps you deal with your loss and provide you direction and comfort in working through this.
It's not a battery operated car. In most cases it's a coal powered car.