I've noticed some new vehicles are forcing somewhat proper jump-starting techniques. My newer Chevy, for example, doesn't expose the battery's terminals. To boost a vehicle (or get boosted) you pretty much have to use their exposed, remote positive terminal and the vehicles ground.

Here's a picture I found online of a similar vehicle under the hood:



The red cap is the remote positive terminal and that black box to the left of it is the enclosed battery. Not shown in that picture is the ground; for this they also provide a terminal to use near the battery on the firewall (you can see it in this video). I'd say its an obvious terminal but I've forgot it was there before and clamped elsewhere .