I have a temporary mobile setup for 2m/70cm in the car, although it's also impractical, so probably use it for repeaters, this consists of my Baofeng UV-5RC Plus, the battery eliminator I picked up from Blackpool on Sunday and the speaker mic I also picked up from Blackpool, the drawback is this setup can only produce 5 watts on 2 meters, maybe slightly less if antenna feedline losses are accounted for, the antenna does not look out of place on my current car and is roughly central on the roof.
I appear able to get into GB3IR from Northallerton using this setup but I have had no reports on how well this is working.
This setup is only temporary until I get the Yaesu FTM-100DE, though again restricted to 5 watts until I pass my intermediate, it is impractical as changing repeater or frequency can only be done at the handheld itself but it makes the best of a difficult situation, I could easily fit a cigarette lighter plug to the VV-898 but this cannot be permanently mounted in the car, the Baofeng handheld can clip on to something using its belt clip, I can look at the options for the VV-898 another day though it needs reprogramming as it is used as a home rig.
I am happy to have a mobile setup even if it is just a stop gap
73 de M6RSQ