SUWANEE — Miles Williams is eager to find out whether Suwanee, the North Gwinnett city where generations of his family have lived, will once again be a bustling stop for passenger rail. “We’ve got to move people and this is better than MARTA,” he said. Williams and his wife, Karen, were among a vast throng of people who passed through Suwanee Municipal Court, setting for a Tuesday evening public meeting on plans for potential passenger rail service between Atlanta and Charlotte, N.C. Area residents streamed through the room, talking to Georgia Department of Transportation officials and studying maps put on easels and across tables.