Given a vehicle length about 14 1/2ft; you're showing an overall length about 21 1/2ft. I think that's longer than a parking space. (20ft?)
Also the Template assumes a half-circular cross section. If you look at it in plan, the length may be different. I got a similar result for my car and started looking for ways to truncate it.
The one on the left would use a Coanda nozzle to virtually shorten the length.