I was watching tv the other day and seen a car that when you walk up to it, well it appears to be able to detect you? Don't ask me how, but when you are in certain amount of feet the doors unlock and interior lights come on.. I swore that there was NO key? The car on the comcerial was black if I can recall and it was parked in a parking garage when the guy walks up to it? Infinity, Lexus maybee?
Can anyone who either knows what I am refering to please post the car. A guy at my work thinks I'm NUTZZZ

and I need to prove him wrong?
Thanks so much..
Spankey