"Duracell 9V" The ending of my infamous battery series. 2nd place design in 2007 and people asked me if this is part of the series, because of the looks. The answer is actually, no. The definition of Prix Battery Car is car USING the battery, not looking like a battery. I gutted the inside and added the 9 volt battery inside (unpowered of course). What a great way to end the series, right?