It is generally safe for women who are 9 weeks pregnant to travel by car, even if they have previously experienced a miscarriage. However, it is always recommended to consult with your healthcare provider before making any travel plans. They can assess your specific situation and provide personalized advice based on your medical history and current pregnancy status. In general, traveling short distances by car should not pose any significant risks, but there are some precautions you can take to ensure a safer journey. Make sure to wear your seatbelt properly, position the seat in an upright position with enough legroom, take regular breaks to stretch and move around, stay hydrated, and avoid excessive stress or fatigue during the trip. If you experience any unusual symptoms such as severe abdominal pain, heavy bleeding, or contractions while traveling, seek immediate medical attention. Remember that every pregnancy is unique, so it's important to discuss your individual circumstances with your healthcare provider for personalized advice and guidance.