method of artificially inseminating sows 10 generally comprises a remotely steerable vehicle 12 the vehicle includes an attachment assembly 14 a support base assembly 16 and a drive system 18 the attachment assembly is designed for coupling a boar 2 to the vehicle the support base assembly includes a plurality of wheels 20 and the drive system is coupled to the support base assembly a receiver 21 is operationally coupled to the drive system for moving the vehicle corresponding to an operational signal sent by a remote transmitter 22 typically the transmitter will include mechanism for steering the vehicle such as are commonly found in remote controlled vehicles known in the art testing has shown that a transmitter of the type disclosed in u s pat no 5 508 479 is highly suited to the purpose disclosed because of durability and reliability the support base assembly includes a substantially planar base plate 23 the wheels 20 and a plurality of sprockets 24 each sprocket is coupled to an associated one of the wheels that are coupled to the base plate each of the sprockets is operationally coupled to the drive system to provide four wheel drive capability two pairs of sprocket support plates 25 are coupled to.