Nicely done. Program response is quick, small footprint and very little draw on resources.
I did note the bug of 0.00 location data if the GPS wasn't ready, but running the 'save' app a 2nd time grabbed a fix in a couple of seconds.
Nice novelty to impress your friends. I can definately see myself using it at a large busy mall. "Which row did we park on?" Particularly in an unfamaliar area.