aint done but one on pavement, but i have done plenty on dirt to get rid of grass that the HOA planted that we didnt want. i got a video of the pavement one, it was in my 86 F-150 with a 302 3.55 open with 31X10.50 tires in my moms drive way (she wasnt too happy with the worn away part of the drive way and the burnt on rubber). the open diff makes it look stupid, but there was ALOT of smoke the batteries died in the camera before i was done. http://www.supermotors.org/vehicles/....php?id=314856