This has been a big topic between my local meta, as it's hard to do determine what's intended. Because when a vehicle must fire snapshots from a result, the passengers take a LD test. Yet jinking specifys the unit must fire, so the debate of are the passengers and the transport the same unit is the determining factor, I've seen it played as they have to, or they don't. Personally I like the idea of the LD test, it's balanced, and makes sense compared to other rulings. If you get called out for not firing snapshots, you are technically right in your reading and understanding.
tl;dr You are correct in your understanding, for the different metas though it may vary.
"Hear our call children of the void, listen to the screams of your brothers and sisters, see the raining ash from your home. Do you have what it takes to stand back up, or will you fall like so many before you."
- Zorev Norterus, Archon of the Immortal Eclipse
Kabal of the Immortal Eclipse | Coven of the Shadow Flesh | Cult of the Black Rage