No more constant reverse beeping

The dealer I bought my 2012 Prius called and said that my mudflaps had came in, so I scheduled an appointment to get them put on today. They were part of my wife's bargaining when we were getting the car. Anyway, I asked them to also change the reverse beep from constant when in reverse to the single beep mode . We went in , we were in and out in 30 minutes, it was like a NASCAR pit stop, only quieter. The constant reverse beeping has been my ONLY complaint with the new car, I am not sure what Toyota was thinking when they put that feature into the car.
I have a 3/4 ton pickup that I don't drive much unless I am pulling a trailer, so I drove it today for the first time since getting my new Prius, it was totally like driving a tank. I thought my enthusiasm for the Prius might slack off a little after several weeks, but I think it grows more every time I drive it.
Arkie