Never done it - but here are my concerns..
1. Does this type use any sort of guide or track? If so, your wheels and tires most likely will not fit or will be damaged.
2. If it is no touch, then what the heck are they using from a chemical perspective that eats dirt, salt, sand, grit, etc. but does not harm your paint / clear coat.
3. As above - if it cleans well, I am guessing it will strip off any polish / wax you may have on your car in the process.
Short term gain, probably... if you try it - let us know how it works out.
PS - I Zaino'd the TRUCK this past weekend - including the license plate
but all the vehicles earn their keep - either on the track or getting to the track. Sodo these things have to be mutually exclusive???