Almost all the vehicles in the Chaos Daemons Codex have the 'Chariots' keyword. As far as I can tell, this keyword shows up nowhere else in the game. Logan Grimnar's in a literal wolf-drawn chariot, and even he's listed as 'Vehicle'.
So, a question: should the 'Chariot' keyword be fair play for anti-vehicle tech? It feels weird that Meltabombs don't get their to-wound reroll against a Skull Throne, and a Tank Ace doesn't do any better against a big, tank-shaped Hellflayer than he normally would, and I can't call in a Killshot against a Seeker Chariot just because it's not specifically a VEHICLE or MONSTER.
Granted, an EMP Grenade shouldn't work against a Burning Chariot, but it also shouldn't work against a Soulgrinder, and that's a Vehicle, so... Ditto in reverse with Poisoned Weapons, which should be able to wound a Chariot much more easily than a Vehicle.
What way should the abstraction go? Should I just replace the 'Chariot' keyword with 'Vehicle' in all instances, because making up keywords like this means the unit interacts with less of the game?