yeah i was surprised to see this thread bout that b/c I just had gotten back from driving thru town (it's college town and homecoming weekends so POLICE out in force) so i was paranoid bout getting pulled over, I had my insert clipped on my visor in truck just incase! Bottles are just too bulky and besides i dont need to carry my entire supply round everwyehre ya know haha I hope everyone will start carrying their inserts with them if they dont already