Hey! If you watch the previous episode a little more closely, you’ll notice that jack actually takes Kevin Carroll’s car when he sets off towards the compound. Presumably it’s a little more discreet than driving a limo through the front gate of a compound in the middle of nowhere! So no continuity error there 🙂
I'd have to go with Season 1 - specifically the first 13 episodes, which I think are really tightly plotted and for me are the best 24 has ever been. The second half of the season isn't as good, but I think the final few episodes of the season manage to pull it back a bit and deliver a cool climax.