What you describe is consistent with a report we've heard before and makes sense. If the Tesla detects a motorcycle or any other vehicle uncomfortably close on one side, it will increase the wiggle room by favoring the other side of the lane until the threat is past, and then it will return to its normal location in the middle of the lane. My question for you is how quickly did the Tesla change its position in the lane? Was it smooth or fairly abrupt? Thanks for your report.