The HVT-600 is a HF/VHF 10 band mobile antenna able to operate on 80/40/30/20/17/15/12/10/6/2 meters and Air Band via a jumper lead to change the frequency band.

SO239 fitting.

A dual band 2m & 70cm "on-glass" antenna.

Don't expect it to work as well as a normal fixed antenna, but if you don't want to mount an antenna on your car any other way then this may be an option for you.