✔ 最佳答案
If you are not planning on becoming a permanent resident of the state of Texas you will want to keep both your CA drivers license and your CA vehicle registration. A tricky bit would be if you needed a CA emissions certificate within the year you plan on living in Austin. Hopefully you will not. If you do, however, you would need to return to CA to do so.
Bottom line, as long as your CA license is current and your vehicle has up to date CA registration you can legally drive in Texas for your stay.
參考: Current CA resident, previous Austin resident.