So now when you are on the highway you need to suddenly search your bag for the key so you can insert it. > Have you checked that? My assumption was that it wi

So now when you are on the highway you need to suddenly search your bag for the key so you can insert it. > Have you checked that? My assumption was that it will shut down the engine once the speed drops to zero. Not in any implementation I've heard of (and it would be quite dangerous and irresponsible). Actually, one story I've heard from pretty much everyone I know owning a keyless car is that the driver drops of a passenger that unknowingly had they key all along (typically a spouse). The driver then drives along, fills up for gas or make some other stop and then can't start the car anymore because the key is with the long gone passenger.