Although there is no religious requirement to place these objects on cars unless they are being used as long-term dwellings, some people still affix them to cars. For 10 points each:
[10m] Name these objects, which must be attached to the doorposts of a house and are often also attached to other buildings. These small parchment scrolls are usually enclosed in a case.
ANSWER: mezuzah [or mezuzot]
[10h] Mezuzot for cars sometimes contain a prayer often recited after the onset of a long journey, whose Hebrew name contains tefilat and this other word. This word is paired with eretz in a phrase referring to suitable behavior.
ANSWER: derekh [accept Tefilat HaDerekh or derekh eretz]
[10e] Another amulet to protect cars is the hamsa, a hand-shaped amulet which is sometimes decorated with the Tefilat HaDerech in addition to a depiction of this body part. The hamsa wards off the “evil” form of this body part.
ANSWER: eye [accept evil eye or ayin hara]
<Benjamin McAvoy-Bickford, Religion>