In the northern hemisphere things are a'bloomin', and muscelcars look great around blooming flowers and trees. A great shoot is to find an area where lots of blooms have already fallen and pose your car there (this would have to wait a month or so).
Yet again, I want to make sure that no one waits until the last moment to try to get calendar pics of his or her car. A lot of people are starting to take their cars out for the first time this year, so take your camera and look for some nice places to shoot.
For those folks south of the equator, it's soon going to be leaf changing time, so you're included.