Any type of racing is cool but unless you have a football field size garden those might be hard to handle! We use to qualify and race our bicycles 30 years ago at our fairgrounds where the track is. We would go between the wall and the front row of the grandstand by turn one, then through the tunnel past the beer stand then behind the grandstand back to the front stretch. This whole area was paved and we timed with a stopwatch then lined up heats and a feature for a complete show. I remember a few guys walking home cause there bikes got totaled! One time a guy got put into the fence along the frontstretch wall and had his cheek cut open from the fence on the track! It was only bicycles, but we raced hard!