Not my video! :P
And I don't know much about electrics much either, but I know enough. Again, I'm not certain that it works, but SOMEBODY has done it.
You'd need to buy the more powerful motor HERE
And a LiPo battery pack and charger with 7.2 volts and at least 2000 mah
mah = how long the battery lasts
volts = how much power it gives
I'm sorry that I cant give you an exact pack, but I don't own any electric vehicles of my own. You're gonna have to look around for yourself ! : o
Make sure that the pack is small enough to be taped to your car! The first thing I'd to is get a ruler and measure the max amount of space you have to cram in a pack. Good luck!
PS. Just spend 5 bucks on that motor, battery pack or not.