Thanks! I actually don't feel as though that's too bad a time for a first attempt: the cars' turn speed is set to allow for pretty much whizzing around corners at full throttle, but the flipside of that is that it's quite fiddly to angle them exactly the way you want (especially when starting out).
If I expand this I'd like to offer more options. A one-lap practice run would be simple enough to set up, and would be especially handy if I added multiple tracks.