Indoor Dog Park

i have a great idea, please no one steal it. what about an indoor dog park? it's raining, it's cold, it is a million degrees out and you don't want to walk the dog. what do you do? what about an indoor dog park? for a nominal fee you can bring your dog in. they can play, socialize, learn agility skills, run around and get all that energy out. you get a happier dog and socializing too! i think it is a win-win situation. what does everyone think? i want to open an indoor dog park. there can be doggie day care, training classes, onsite wellness services, grooming, and even an outdoor area! i think it is awesome, but that is my opinion. would you tkae your dog there? would you recommend someone take their dog there?