Dip
Put the camera at floor level and shoot a pic of the car going into a dip on the road. You only get a part of the car and the rest is "under the road". Could be great for some blurring techniques.
Parking
It's kinda dumb, but I've taken some shots of it and it looks nice. Although it's very limited, to the Times Square Photo Travel only I believe. Put the car between the taxis that are on the curb... looks nice.
Headlights
Dunno if it's been done before. A theme in which headlights are the focus. Could fork into different parts of the car (tailights, spoilers, rims [although I believe rims has been a bit overdone already])
Bully
At least 3 cars must be in the picture. Two of them must be of the same country (or manufacturer)... and they're like "bullying" the third.
Retractables only
Should be self explanatory, but it's only cars with retractable headlights... preferably with headlights on.
Multiple air
Pic in which more than one car is in the air.
Sacrilege!
Take a very good looking car and put the ugliest rims you can find and a spoiler (if it makes it look uglier)... kind of subjective, but could produce some great (
) shots.
Tailgating
One car tailgating another.
Line
More than three cars in a straight line, one behind the other.
Big and Little Brother
Variation 1:Battle shot of a normal car vs. its rally/touring counterpart. For example, Renault 5 vs. Renault 5 Maxi Turbo Rally Car.
Variation 2: Older versions of the car vs. newer versions. Example: '62 Skyline vs. '02 Skyline. If possible, take the oldest vs. the newest available in the game.
Overkill (or
Lesserkill)
Ultra fast car against a pack of much slower. Or normal car vs. LMPs.
Hybrids
Use only the Hybrid/Electric vehicles.
Special Colours
Use only cars that come in "Special Colours" (the prize cars)
Sparks
Duh. Lots of sparks.
That's it... going to bed now... If possible, I'll come up with some others.