.......That's odd...IAT should be pretty close to ambient ........
When the car is stationary the air at the intake will get hotter simply because there is no movement. Once there is some forward velocity the temperature will quickly drop to ambient.
When we were testing to decide whether a CAI was of any use we instrumented the underhood area with thermocouples and found that there was quite a bit of extra heat at the intake until about 30 MPH, then it went away.
Sky NA 2007 Midnight Blue
Sky RL 2008 Carbon Flash - Naked