Mobile Antennas.

Mobile antennas come in different sizes and many different mounting types. The type you chose will depend upon whether you want a small, tidy one or one that works well but may be rather large.
The type of mounting will depend upon the vehicle you use and how you have to mount it. Although some small antennas come complete with a magnetic base, most will come without a base so that you can select any combination of antenna and mounting type.
There have also been telescopic CB types disguised as normal car radio antennas and special splitter boxes available to run both the CB and car radio from it.
BEWARE: Some may not withstand high speeds - they may snap or fly off the vehicle if used at high speeds.

A mobile CB antenna usually comes without a mounting, so that you can select one that is suitable for your needs. More information is on the mobile mounts page.