With 2016 drawing to a close, we're continuing our review of the year by looking back on some of the best transport designs, including a driverless car with a lift-up roof, a motorcycle that can't fall over and a 3D-printed wheelchair.

Renault replaces doors with a sliding roof for Trezor concept car
The most impressive concept car of the year came from Renault, and featured a roof that "opens like the lid of a jewellery box" and a futuristic-looking red windscreen.
Unveiled at this year's Mondial De L'Automobile Paris, the Renault Trezor is an all-electric, two-seater vehicle with autonomous driving capabilities and a number of touch-screen controls.
Find out more about the Renault Trezor concept car ?

BMW unveils super-safe motorcycle that can't fall over This year saw BMW present its vision for a future where motorcycle accidents "a thing of the past".
The zero-emissions Motorrad Vision Next 100 incorporates a self-balancing system that BMW claims will protect the rider from any accidents and liberate them from the need to wear a helmet.
Find out more about BMW Motorrad Vision Next 100 motorcycle ?

Virgin Galactic reveals updated passenger spacecraft and restarts test flights
Following the fatal crash of the SpaceShipTwo in 2015, Virgin unveiled its new Virgin Spaceship (VSS) Unity earlier this year, and announced plans to start tests in California and New Mexico.
Virgin Galactic owner Richard Branson said the spacecraft comes with &qu...