Wrong, the definition you gave is of Car Hang-Outs. (Usually found in parking lots.)
Skreet racing, is running from a dig from a start point, to an end point. NOT from a roll, etc. That is defined as having fun/playing around.
As stated before, anyone with money can build a fast car. Making it work is the trick. All fast cars can roll race and semi hook at the track. Therefore it is not a challenge.
