A Roman road once cut a straight line through this part of the country, but the modern streets of West Oxfordshire are far less disciplined. From a rooftop perch, the loop of Akeman's Arc looks like a lazy ribbon draped over the flat, green countryside. It is a gentle 3.2 km run with 5 corners that requires very little wrestling with the wheel, and it plays free in the browser with no account and no install. The driver mostly glides through the open air of the plains.