"Birmingham's Intrago Mobility "city port" is an interchange built on waste ground below the M6. When you drive into the port, your long-range Zipcar is directed to a parking space. You get out, stretch your legs a little, and then start the next phase of your journey by getting into a 20mph Toyota iReal (a three-wheeled, one-seat, personal-mobility concept vehicle) and driving it up onto the elevated Velo-city, which leads out of the port. This dedicated new network of cycle tubes criss-crosses the city - connecting city ports with commuter towns and city-centre attractions. Its low-friction surface allows cyclists and light electric vehicles to travel at surprising speed, while its enclosed nature protects them from the elements."