[wulf]

One thing to ask yourself (and this will work far beyond the scope of car photography) is "what story am I wanting to tell". In the examples Jamie posted, the framing story seems to be "this is a rugged beast of a vehicle, able to power across inhospitable landscapes". I think the first of those images works better because, as well as including the pickup as a the dominant dynamic element in the frame, it gives more context - wide open desert and empty sky. In particular, the fact you can see the sky under the wheels emphasises the idea of powering over the landscape.

In the original shots, I think the first, in the classic 3/4 view, has most potential. It makes me think of peace and tranquility and the vehicle as a means for getting there. I'd have wanted a slightly higher angle, so the car is safely under the level of the hill in the background (better contrast - the top point of the windscreen seems a little bit close to the sky to me) and also a less over-exposed sky. A subtle combination of two or more exposures might yield the best overall result so you don't loose details in the shadows while still capturing the sky (and reflecting it in the bonnet). That would be a much less aggressive display of power but I think would be quite effective.

Wulf