Surely having a charging wire in your car and connecting it before a long drive is not that hard? It's the main way my Samsung phone charges, I usually go full blast playing internet radio, running Waze etc. and when I arrive my phone is 100% charged.

I always wondered why there isn't there a charging standard for phone mounts/cradles just like the old cordless phones where placing it in the cradle made two metallic leads connect the charging circuit.