On 04/02/2016 13:57, Brian Reay wrote:

On my first trip to the US, I arrived to discover I'd not packed any
underwear. I jumped in the hire car, drove to the local shopping mall,
stocked up, and returned to the car park. Of course, I couldn't remember
what the hire car looked like (it was some strange model).

I wandered around for ages clicking the remote.




That wouldn't work with mine and probably most modern cars.
The code (pseudo)randomly jumps and the car will only accept codes a few
in advance. After you have used up the codes you have to put the key in
the ignition to restart the sequence.