We often start in a remote location, or in some small town. I always worry about that and yesterday it came true. After the ride, my brother's POS Geo Metro wouldn't start. We were in a tiny, tiny town. But, I had one of these batteries to jump start his car and off he went. I could have used my car, sure, but if you are ever alone with no one to help out, this could be a life saver. I've carried in my car for years and this is the first time I've used it. Recommended by my mechanic after he got stranded on a camping trip and had to hitchhike into town.