safe thing to do would be to remove seats and carpet to thoroughly dry everything underneath out. A friend of mine let it rain in his 968 and a couple of weeks later after he thought everything was nice and dry with no ill effects (he only let everything dry out in place in the sun) one night something shorted out, activated the starter moving the car forward into his new turbo where it sat until the battery ran down. We could only attribute it to the moisture inside since the key was in the house when it happened. Another one of those " I never saw that happen before " moments that come along all too often.