revive a drive, be carefull on this one buddy i myself went to look at a tennis court recently it was about 800 square meters the company who wanted the job done wanted me to remove some gum and then a clean, however when i went to area in question to do a quick demo before metting the client at the location as i wasant sure what the out come was going to be and didint want to make my self look silly i found were id tryed to remove the gum small pot holes were starting to form so that was a no go, on just the cleaning front just using 40 degreses on half pressere this also was a non starter as it to seam to be lifting the tarmac,still not sure if this could of had something to do with the way it was layed however what ever the case may be decided to give it a wide birth as the company wanted a garantee that i wouldnt damage the tarmac witch i couldnt give made my exsceses and gave it a miss but dont let me put you of try and have a little practice if poss why no ones about in a small area and see how you get on best of luck me!!!!!!!!!!!!!!!