And furthermore it's possible he/she didn't even ask but was told so there was no Amira.
It is also forbidden to have a non Jew do melachos for you, even without amirah.
Regardless, there were plenty of other issurim involved besides the car.
I'm just not even sure why we have to be splitting hairs over which halacha was violated or not. The fact is that Jared and Ivanka are culturally orthodox to a certain extent. I don't believe they publicly have ever claimed to keep halacha.
They obviously do participate in Shabbat and some degree of kosher. But that's about it.