Austin is close and does have a fairly vibrant start-up scene/culture. Make the drive and go to some meetups or functions. Also, don't be mysterious. Remember,

Austin is close and does have a fairly vibrant start-up scene/culture. Make the drive and go to some meetups or functions. Also, don't be mysterious. Remember, even Dean Kamen thought he had a ground breaking invention. After all the secrecy and hype, it turned out to be an overpriced little scooter. Tell people honestly about your idea, they're too busy on their own things to "steal" it, but the feedback you get will be invaluable.