Europe may not be the biggest continent, but it'd still be a pain if you had to walk everywhere. That goes extra if you're in a hurry. And during WWII, a lot of people were in a hurry a lot of the time. To help move men and equipment around, the Germans used a lot of different types of trucks. One of them was the Krupp Protze Heavy Field Car. Now you can add one of these to your Bolt Action forces.
So, no, a field car may not be as exciting as a tank or artillery unit, but they are pretty vital to the movement of your forces (it's like if GW was showing off a new model of the Rhino). And you can use the Krupp Protze Heavy Field Car to tote around your new artillery piece that we told you about yesterday.