A vehicle includes a chassis and an internal combustion engine carried by the chassis. A slotted tubular is utilized to provide through-tubular signal transmission andor reception using an antenna adapted to generate a magnetic dipole moment with a transverse or controllable orientation. Therefore, a concave portion is provided to the end of the fluorescent lamp with an external electrode, and by forming the external electrode in the concave portion, the total area of the external electrodes is secured. The external media includes the operating system image and other bootstrap files, each having been digitally signed with an asymmetric private key that corresponds to the public key. The operating system may de-allocate a portion of system memory when a balloon code device driver executing under the operating system requests the operating system to allocate memory to it. The reflective septum ensures that almost all the light produced by each lamp will be directed into the desired light distribution pattern which is selected and easily changed by the user.