wow, that was a lot more fun then just driving around the back yard. I had a great time and met some cool people. one question. for a battery pack in the car i just have the thing with four AA batteries in it and i hate it. it doenst last very long usually and i am constantly changing them. i want to get a rechargeable pack for my reciever and transmitter. Its an airtronics MX3. what do you guys suggest?