For my physics class a project was assigned in which we have to build an electric car powered by a 3 volt DC motor which could only be powered by 3 volts of battery power (in other words 2 AA 1.5V batteries). We just started learning about circuits so I don't have a very good knowledge about this kind of thing but I was wondering if there was any way to increase the power going to the motor without increasing the output of the batteries. I thought about a transistor to increase the voltage but if the motor can only take 3 V would it blow the motor if more volts were added? Or is there some way to increase amps instead of voltage that would assist the power. In case it helps I am planning on using the 3 V DC micro-vibration motor from radioshack.