When it comes to mining, cost of electricity is always a negative factor that cuts into profit. Miners always look for cheap (or even free) electricity to maximize their profit. I thought about a solution which can be used for mining easy coins in small scales. You all know that the car's battery generates 12V but we need 220V for running mining equipment. There are some devices called inverters that can turn 12V into 220V. By using this device, you can provide the electricity you need for your mining and the best thing about it is that it is totally free because when your engine is running, the alternator keeps charging the battery and you have electricity as long as the engine is on. By doing this, you can earn a few coins while driving to work or coming back to home. I haven't tried it yet but I want to know if anyone here has thought about the same idea. This is a picture of an inverter.