Buffer hexes make a decent recommendation, but you did miss D7.1 and D7.11. unarmored vehicles may conduct OVR, passenger FP can be applied to that OVR, and OVR expenditures are not required if the enemy is concealed and opts to remain so. I'd bet losing sparse forces right up front in OG OVR's ( with the attendant -1 DRM applied) is not the best possible use most might see for the at start forces on that board. 1/4th tripled from say 2 x 6-6-7 in a 29pp truck means a 7(6) FP -1 OVR attack to start things off the bat. if they maintain concealment via a PAATC, so much the better, they can be OVR at 3(2) FP -1, for each of the three trucks, or simply bypassed and not overrun at all. I'd enjoy running the three 29PP trucks with a triple set of back to back 6-1s or 2-1s to start the game off wonderfully, not to mention their concealment can be rapidly stripped before the OVRs go off by a HS bump form entering infantry. Then a triple set of back to back 6-1 OVRs , a good way to get some early prisoners from a broken unit in the road surrounded by enemy entering infantry.
Infantry cannot block the entrance of a vehicle, only other infantry.
Thinking about it further, it OVR lining up on those hapless germans trying to block the road would certainly give the game a fun factor flavor par none.
The Cavalry Charge via trucks!!!