Yes, in most cases, you can drive a car immediately after a side window replacement. However, it is important to ensure that the replacement has been properly installed and any adhesive or sealant used has had sufficient time to cure. It is recommended to follow the instructions provided by the auto glass professional who performed the replacement and conduct a visual inspection to ensure the window is securely in place. Additionally, check for any debris or glass fragments inside the vehicle that may pose a safety hazard.