It gives such good mileage because it is shaped so that it does not disturb the air much as it passes, and because it has wheels that roll with very little resistance. It is probably capable of about 100 km/h on 2 hp. This vehicle probably isn't very practical because of poor view of the road and because the tyres will soon burst if the road is not perfectly smooth, BUT if the tyre industry would make special low-rolling-resistance tyres in sizes similar to motorcycle tyres and if people did not worry so much about what a vehicle looks like then it would be possible to make a practical motorcycle or car that gets close to this vehicle's mileage.
