Yes, car rental bonus miles are changing very fast, maybe Web Flyer should post them every week like they post the last minute bargain airfares.
I agree that for Hertz right now their rewards program or the Marriott 1000 point bonus appear better. I think that Hertz will change the point structure with Marriott just as they have done with airlines. Most other car rental companies are still giving 500 miles per rental but the rules are changing. I end up booking the one with the cheapest rates, and its been a long while since I rented with Hertz.
Is it 1 mile per dollar or 2 miles per dollar for corporate rates with Hertz?