Had the interesting experience today of seeing how my new model s drove 45 minutes away with my girlfriend without a key! She was dropping me back off at home and i got out of the car with the key in my pocket. I can only guess that because she was in the drivers seat and the car was still on....it never shut off and continued driving. Didn't realize until she got to her destination and I had to drive up to Topanga to bail her out! Not sure if this is a good feature or bad. Will definitely remember to always have the key from now on, but definitely an easy mistake to make.
Don't get stranded! anyone else have this problem?