An in-ear earphone including a housing having a first end for receiving a cable, and a second end which is placed in a concha of a user. The electric drive system has a first traction device configured to propel the work machine and a first motor drivingly connected to the first traction device. The invention also relates to methods for producing a soybean plant containing in its genetic material one or more transgenes and to the transgenic soybean plants and plant parts produced by those methods.