On the road, the XP Kinetic is just as capable. It's rated for a top speed of 55 mph (89 km/h), but the lack of a windscreen and the resulting threat of frostbite kept me from that speed. Still, even ...

Alastair Hamilton recently had the chance to put the fizik Vento Antares R3 Adaptive 3D-printed saddle through its paces.

Imagine being able to pedal until your knee starts burning, then switching over to all-electric mode and coasting your way ...