Do you have a speed Tamiya checker? post a VID!!!!!
 

I tested my 6 celled Civic by setting the tester at 100M and 50M then rolled the tires so I can press the start button. Then I stop the car from rolling then press the start button right away. I tried my best to accelerate on the 4th beep.

I felt that this gives a good idea of speed and acceleration.

(It's a little faster when fully charged.) my videos are here...

100M

50M

Set yours to 50M and/or 100M and see what your car can run.