Tony was driving in earnest and at speed. He realised it would seem suspicious, so he determined that he must shake off the police car. There wasn't much else on the dead straight Hundred Foot Bank, beside the New Bedford River, Terry's resting place.
So fast and erratically was Tony driving that Paolo was fearing a little for his own life as he was thrown around. He could hear the police siren behind and wasn't sure if that was a good or bad thing... for him. The area was so remote that he continued the deception concerning the mobile coverage.