This idea is really interesting. If a fixed mounted electromagnet worked, would there be enough time between car's electronics turning on and its sending juice to the starter to work, or would the magnet need to already be on first? Like turn car on, wait 2 seconds then start.
This is the first time I ever wished I owned a 3d printer - for building a mounting rig. Maybe it's finally an excuse to buy one.
You used what exactly? A small neodymium disc magnet, yes? Hard to see exactly but I don't know what else it could be.
Edit: it's just like a simple shop magnet parts grabber thing, I think?