如果你想加入自驾游并使用英语表达这个意愿，以下是一些可能的措辞方式：
1. "I would like to join the road trip."
2. "Are you looking for someone to join your self-drive adventure?"
3. "I'm interested in participating in your car trip."
4. "I'm keen on being part of your自驾游."
5. "I'd love to hop on board your self-drive tour."
6. "Is there room for one more in your car for the road trip?"
7. "I'm interested in joining your driving adventure."
8. "I'm available to join your self-drive expedition."
9. "Can I come along on your road trip?"
10. "I want to be part of your DIY travel adventure."
根据具体情况，你可以选择最合适的句子来表达你的意愿。
