Phil McKenna flew down from his home near Philadelphia last weekend on a business trip.
The weather was pleasant and he saw something in this city he had never seen before on his travels: bicycles for rent.
He was excited for the chance to ride a bike, tour Chattanooga and get some exercise, he said.
But he found a problem. They didn't work.
He tried once. Twice. Thirteen times at 13 different stations. Over two days, he was able to rent a bike one time for 30 minutes, he said.
But that was it.
"It was frustrating," McKenna said. "I was excited about using it, and now I have no confidence the system will work."