I was just discussing the push button start with someone the other day. I drove a BMW E90 that had this key that looked like just the fob without the actual key. I looked at it for a second and then went out to the car. Found a hole it fit in and waited, nothing was happening, then I saw the "start button". Felt like an idiot but, I had never seen that before. I work at a body shop so I had spectators, that were laughing.
But, instead of that pesky one turn of the key, now it's lengthened to more steps. I don't get it. Lexus is pretty cool that you just have to have the key in your pocket and it'll read it. I just wonder when it got so inconvenient to twist the key.