Not to mention that the lightbar is directly in the airstream as you drive. It only has to start lifting a little and getting air underneath. Once that happen

Not to mention that the lightbar is directly in the airstream as you drive. It only has to start lifting a little and getting air underneath. Once that happens any glue joint is doomed. I think if you did the glue joint perfectly then it would probably be fine, but impeccable QC is not a hallmark of Tesla.