I used CB for a few years when it was first legalised in the UK. I used to travel all over the country visiting customers and it saved me having to carry a huge box of county A-Z streetmaps in the car, as there'd always be a local home based CBer who'd give you real time guidance right to your target destination - remember this was in the days long before sat-navs.
It was also great for avoiding jams as you'd get an early warning several junctions before major delays from mobile units on the other carriageway who could tell you exactly how bad the delay would be, so you could decide whether to divert before getting stuck on the tail end. And of course advance warning of smokies, especially 'bear in the air' - there used to be lots of coppers in choppers alerting their pals down in the patrol cars of any approaching speeders, especially common when the M40 first opened.
There was also a fun element to it as well. We used to go out in the evening playing track and seek by triangulating signals, also arranging eyeballs, sometimes with young lady breakers. Also DXing from high ground such as the top of Richmond hill - on a good night you could reach the south coast, not bad on FM.
I've still got a couple of hand-helds kicking about in the garage, I did think about rigging one up in the Pollensa but as pete4x4 mentioned above, the challenge is with a non-metallic body you can't use a mag mount and there's nowhere sensible to mount a fixed twig.
I've been using a scanner for the last few years, mainly monitoring the marine and air bands. I sometimes use this whilst static in the Pollensa, there's no problem with lack of ground plane when you're only receiving, not transmitting. I either put a multi-band Discone antenna on top of the bulkhead via the rooflight or else I mount my marine antenna on an extension pole on the rear ladder, depending on what I'm monitoring.
The scanner also has the CB bands but I rarely hear anything on those these days, although I haven't tried it near any major motorways etc. Might try that sometime on a long car journey as I have a mag mount twig which can attach to the roof.
10-10