Man are you farking thick they answered ya question !!!!
But for you I will repeat their answer ...
1. Go to Mr Mint ask him to cut a new key without electronics ...
2. then go to the beach ... open boot place electonic key in boot (keep the mr mint key in ya shorts ya are wearing !!!
3. close boot
4. Swim
5. Open boot with Mr mint key in ya shorts ...
6. Use Elecltronic key to open door/start car !!!!