Electric mountain bikes
The electric bicycle is much the same as your ordinary hardtail or full suspension mountain except with one game changing addition. A rechargeable battery strapped to your frame that supplies energy to a motor on the drivetrain powering you to speeds of up to 24kmh. The control system allows you to adjust the power, the variations depend on the model but the most common set up is for the power output of the motor to match your own leg power so you keep the fitness benefits of cycling relevant. Whilst ebikes do seem to evoke a very marmite like reaction in the mountain bike world for as long as they continue to make singletrack climbs fun, double the distance you can cover in the same time and make getting outdoors possible for ever more people they will only grow in popularity. Have you tried one yet?