This site is very much under construction!
It is my sandbox to try out concepts with MapQuest Open Directions and the Maperitive rendering engine.
A brief description of how I am trying to accomplish this is here.
I wish I could use OpenLayers for the slippymap, but I cannot figure out how to make it work with touch gestures on my iPad. So I am using Google Maps API v3 which has very nice mobile integration. But my tiles are all Maperitive-rendered OpenStreetMap data. I'm not using any Google data.
more info about my projects at

Want to take this map into the field?
Click here to download a PDF file.
From: To: How To video
Map data © OpenStreetMap Contributors CC-BY-SA ... Directions Courtesy of MapQuest ... Elevation Courtesy of MapQuest
There are some costs involved in hosting this page and with my time to generate this map. If this is of any value to you, please feel free to donate whatever works for you. If this site has no value for you yet, check back in a few weeks for more improvements. Better yet, click on the Feedback button on the side of the page and let me know what I can do to improve it.
Edit with JOSM