Shaan has the details, Apple Mac + AutoCAD without the need for virtual machines and a hosted solution for the iOS hardware!
AutoCAD for Mac and AutoCAD WS for iOS Devices Announced by Autodesk - Between the Lines
“AutoCAD natively on the Mac is no longer a myth or urban legend like bigfoot, UFOs, and unicorns”
“AutoCAD WS extends AutoCAD DWG to Apple iOS based devices like the iPhone, iPod Touch, and of course the iPad”