After following the live blog through I think there's certainly an argument to be made that Google are, at the very least, worried. There seemed to be no real flow, no drive, no point to the presentation and few major featured other than a 3D map that isn't available yet and, worse, with no real date as to WHEN it may be up and running (and they also glossed over the fact that another new feature, offline maps for Android, has been available for a while as part of Google Labs).
Now please don't get me wrong, this isn't in any way a gloat at Google or an 'Apple is teh be5t!' post. But it's clear that Google are going to be looking nervously towards Moscone West next Monday and, as they're the current maps provider for iOS, it seems safe to assume Apple will indeed be unveiling their own solution. And if for no other reason than offering serious competition the tech industry should be grateful. Certainly it won't hurt to have a company with the reach in mobile that Apple does pushing Google to deliver a better product.
As for the 3D stuff, I maintain that this is going to be a huge selling point for those that struggle with 2D maps, especially when used on-foot. Of course that assumes they can get the camera view down low enough to give a reasonable approximation of what you should be seeing but the c3 videos that are available suggest they could get pretty close. More interesting will be how this stuff links to the rest of the device and how mapping is integrated into other services.
Someone mentioned the business case and that's a very good point. Google, after all, needs to make money from its mapping product, either via search or (as we've recently seen) charging third parties to access it. That policy has driven away some VERY big names recently so they're going to have to have an astonishing product to make it work. Apple, on the other hand, doesn't really care about any of that. It makes its profit on the device itself, maps is just another feature to help ship tens of millions of iOS devices so they can more easily justify a large investment.
Whatever happens I'm really looking forward to seeing what Apple has in store on Monday.