A mechanic assembles a BMW C evolution electric maxi-scooter at the BMW Berlin motorcycle plant February 23, 2015. The storage capacity of the BMW C evolution's high-voltage 8 kWh battery provides a range of up to 100 kilometres and a maximum speed of 120 km/h. (Photo by Fabrizio Bensch/Reuters)

A BMW C evolution electric maxi-scooter is displayed in a showroom at the BMW Berlin motorcycle plant February 23, 2015. (Photo by Fabrizio Bensch/Reuters)

A mechanic operates a crane holding the high-voltage battery unit for a BMW C evolution electric maxi-scooter at the BMW Berlin motorcycle plant February 23, 2015. (Photo by Fabrizio Bensch/Reuters)

A mechanic makes a technical check on a BMW C evolution electric maxi-scooter on the production line at the BMW Berlin motorcycle plant February 23, 2015. (Photo by Fabrizio Bensch/Reuters)

A mechanic assembles a BMW C evolution electric maxi-scooter at the BMW Berlin motorcycle plant February 23, 2015. (Photo by Fabrizio Bensch/Reuters)

A mechanic cleans the surface of a BMW C evolution electric maxi-scooter on the production line at the BMW Berlin motorcycle plant February 23, 2015. (Photo by Fabrizio Bensch/Reuters)

A mechanic makes a final check on a BMW C evolution electric maxi-scooter on the production line at the BMW Berlin motorcycle plant February 23, 2015. (Photo by Fabrizio Bensch/Reuters)

BMW logos are displayed on the production line of the BMW C evolution electric maxi-scooter at the BMW Berlin motorcycle plant February 23, 2015. (Photo by Fabrizio Bensch/Reuters)

A mechanic assembles a BMW C evolution electric maxi-scooter at the BMW Berlin motorcycle plant February 23, 2015. (Photo by Fabrizio Bensch/Reuters)