Tom Mudra and Hans-Tobias Schicktanz are two German designers who designed this bike called the Mosquito.
“Our aim was to create a lightweight and attractive E- Bike suitable for urban places. The motor is powered by lithium batteries which cost about 50p to charge. The Mosquito has got a range of about 60 km (37 miles) with a maximum Speed of 50 km/h (31 miles)”
Materials used for the frame can differ, as well the frame incorporates batteries and motor e.g. carbon fiber, wood and plastic.
Now, how do you think it looks?