That's the thing man, the sun was too high so we had to stick to the shadows for the best exposures, then we couldn't shoot with the sun directly on the car, and the "good" shots came when the sun was behind the car in the shadows yadda yada yada.
When I have nothing blocking the sun and it's "golden hour" I can get shots like this:
https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-prn1/536649_10150892549158608_1934249709_n.jpg/IMG]
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I just picked up a set of neutral Density filters for my camera and they work wonders in direct sunlight. You should look into a set if they can be added to your lens.