CB radio for the car

Moin, I’d like to upgrade a CB radio for my private car. You know it, it’s in traffic jam, nothing works anymore, you don’t know why. How nice it wouldn’t be to have a CB radio in the car to ask the colleagues ahead what’s going on. Or to draw the attention of colleagues (e.g. broken pears, etc.) But what’s the best thing for the car. Of course I don’t have a place to put a 1.5m antenna on the roof unless I want to be hit by lightning. d handy devices that you know or may have/used? Do you even get mobile devices for this radio bandwidth? Or only stationary devices? If yes, any recommendations? What about use from 2020 on? Have I read in a lot and looked into it, but I don’t get through it all. I know about a CD-approved device + certificate. Max 4W. Channels I know luckily still from the truck Would be grateful for every tip. LG Joey