A Wide Bottom Ceramic Travel Mug gives you a much steadier base, making it more difficult for your cup to tip over. On the flip side, it also means that it will not fit into a cup holder.
The designs are very varied, from ones with an extremely large diameter at the base and a narrow opening, to ones that are the same width everywhere. Most also have some kind of skid protection on the bottom to ensure the cup does not slide around while in a moving vehicle.
All have either a lid or a narrow opening, which helps retain heat. It also helps prevent spills. These cups are great for the road, as long as you don’t plan on using a cup holder. They will not fit, as mentioned.
I really like the style of these cups, especially the two with the extremely large base. I think it loos great and is practical.