GTA V Scrapyard Best n' Fastest Method

So....Happens that I bought the ScrapYard business in GTA V, ... at first I didn't know what to do, so I came to the master YouTube and find out, of course I did find many videos about it, showing you what you have to do, which is destroy as many cars as possible, but none of them shows an easy and quick method to destroy cars and get rid of the wanted stars in less than a minute. Hope you like it.