On the road back to Rio, we stop underneath a spectacular old iron railway bridge - "the first curved iron bridge in the world, " Mauricio informs me, with some pride.
Phase two - opened on Thursday - is the longest section of the road, crossing the Clyde at Rutherglen Bridge and passing Dalmarnock Railway Station, the Commonwealth Arena and Celtic Park before joining the Parkhead by-pass at the Forge Retail Park.