Were you trying to contrast the car with the background? I'd expect to see something like a pickup there. Try a more 'romantic' setting. Warm, late light.
You have the right idea on the lighting - no direct sunlight, but need to get away from an area that puts annoying reflections in the side. Sometimes you can't, but if it's a friends car, you have the option of going anywhere you want, no?
Pics #1 3, & 4 : roll up the drivers window.
1) Turn the wheels for head on shots and 2) try shooting the car with it's lights on.
Yes. Sometimes you need to go for about a 4 sec exposure & have someone in the car flash the lights for about 1 second. On a car like that, you can probably get the same effect just by hitting the remote 'unlock' button at about the 3rd second.
Replace the license plate with a gray-black card, or maybe one that says "Infinity".
Show us the new pics! 