I take advantage of that by using the card to pay bills (that don't charge a "convenience fee" to use a CC) and try to time things to get as close to the 60 days as I can.
Well, I did try to get my credit limit raised temporarily once so I could buy a car with the card, and get the cash back. The CC company refused. I pointed out how they'd still be making 2% net on the transaction, which would be well worth their while. This kind of pitch was above the pay grade of the phone people, and I got the "there's nothing I can do" garbage.