Google Maps Mashup that I want

Here’s an idea for a Google Maps mashup that would have been really freaking useful over the last few days:

Enter an address and either an amount of time you’re willing to drive, or an amount of money.

Map the circle you can travel, driving that time, and mark hotels under that price range. Other variables could be added (amusement park locations, B&Bs, whatever). I’m thinking a sort of “day trip planner.” Anything out there similar to this?

That’s it! daytrippr.com. Hell, it’s still available, people! Web 2.0 ahoy! Go to it!